One of the paradoxical aspects of this interesting case is that patients whose low opinion of the professional skill of their physicians impelled them to institute lawsuits for malpractice1 now seek in the case at bar inter alia to require those physicians to continue to provide medical care for the plaintiff patients.
It might be against public policy, as involving something akin to a conflict of interests, to compel a physician to continue to serve a patient who has filed a malpractice suit against him. However, plaintiffs-appellants here allege (and for the purposes of a motion to dismiss we must accept as true) the existence of a broader conspiracy among a 11 the doctors in Joliet, Illinois, to refuse to treat any person (or that person’s family) who has instituted a malpractice suit against any doctor in Joliet, Illinois, in any state or federal court.
Plaintiffs are Marcia Williams and her child, and Sandra Young and her four children. They allege that they bring this action on behalf of all persons who have filed or may file a medical malpractice suit against any doctor in or around Joliet, Illinois, and that the class is numerous. Sandra Young and Marcia Williams aver that they each filed malpractice actions against those defendants whose patients they have been; that they each were notified of refusal to treat them in the future; and that they had sought to be accepted as patients by other doctors but had been refused.
Plaintiffs state, on information and belief, that all the doctors in Joliet have combined to refuse to treat any person, or family, who has brought a malpractice action against any Joliet doctor.
Other than the class action averment of numerosity, plaintiffs do not allege the size of the group refused treatment. They do allege that the medical practices of defendants affect interstate commerce; that defendants purchase much of their supplies from out of state; that they are members of national associations and governed by their policies; and that they treat welfare and medicare patients and receive payment through the mails, interstate.
The complaint alleges: (I) violation of plaintiffs’ civil rights under 42 U.S.C. § 1985; (II) violation of 42 U.S.C. § 1986 by a defendant hospital; (III) violation of the Sherman Anti-Trust Act, 15 U.S.C. § l2; (IV) violation of the Illinois Antitrust Act, 38 Ill.Rev.Stat. Sec. 60-3(2); (V) intentional infliction of severe mental and emotional stress in violation of Illinois law; (VI) conspiracy to boycott, in violation of Illinois law; (VII) malicious interference with contracts, in violation of Illinois law.
*451The civil rights statute invoked in Count I, 42 U.S.C. § 1985,3 is derived from the old Nightriders or Ku Klux Act discussed in U. S. v. Cruikshank, 92 U.S. 542, 23 L.Ed. 588 (1875). The section is applicable only where there is “some racial, or perhaps otherwise class-based, invidiously discriminatory animus behind the conspirators’ action.” Griffin v. Breckenridge, 403 U.S. 88, 102, 91 S.Ct. 1790, 1798, 29 L.Ed.2d 338 (1971).
The first subsection of Sec. 1985 expressly requires “force, intimidation, or threat” and is directed against preventing officials from doing their duty. This provision is obviously inapplicable to the case at bar.4
The same is true of the first part of subsection (2) of Sec. 1985, which relates to deterring a witness or party from attending court, or testifying truthfully, or influencing a juror, in any United States court. Here, too, “force, intimidation or threat” is requisite, and the provision is obviously inapplicable to the case at bar.
However, subsection (2) of Sec. 1985 contains two parts, separated by a semicolon. The second part is more general in its terms, and relates to obstructing “in any manner” the due course of justice “in any State or Territory.” (Perhaps this part of the subsection is intended to apply only to state or territorial courts, rather than to courts “of the United States.”)
But such obstruction of justice must be undertaken “with intent to deny to any citizen the equal protection of the laws, or to injure him or his property for lawfully enforcing, or attempting to enforce, the right of any person, or class of persons, to the equal protection of the laws.” As explained in Griffin v. Breckenridge, 403 U.S. 88, 102, 91 S.Ct. 1790, 1798, 29 L.Ed.2d 338 (1971): “The language requiring intent to deprive of equal protection, or equal privileges and immunities, means that there must be some racial, or perhaps otherwise class-based, invidiously discriminating animus behind the conspirators’ action. The conspiracy, in other words, must aim at a deprivation of the equal enjoyment of rights secured by the law to all.” Hence plaintiffs have not established a cause of action under the second part of Sec. 1985(2), as construed by the Supreme Court.
Similar reasoning precludes the existence of a cause of action under Sec. 1985(3). That subsection reaches “two or more persons . . . [who] conspire or go in disguise on the highway . . . , for the purpose of depriving . . . any person or class of persons of the equal protection of the laws, or of equal privileges and immunities under the laws.” But as clearly explained in the acute analysis set forth by Judge (now Mr. Justice) John Paul Stevens, speaking for this Court in Dombrowski v. Dowling, 459 F.2d 190, 194-96 (C.A.7, 1972); and Cohen v. Illinois Institute of Technology, 524 F.2d 818, 828-29 (C.A.7, 1975), an equal protection claim of this character is one species of a claim alleging violation of the Fourteenth Amendment, and hence like all Fourteenth Amendment claims requires State action. This principle was reaffirmed by this Court *452in a subsequent case, Murphy v. Mt. Carmel High School, 543 F.2d 1189, 1193 (1976).
Hence it follows that the complaint in the case at bar sets forth no cause of action under Sec. 1985. It is equally clear that appellants have no cause of action under 42 U.S.C. § 1986, since that section merely gives a remedy for misprision of a violation of 42 U.S.C. § 1985.
We turn now to appellants’ most plausible foundation for a cause of action — the antitrust laws. The economic philosophy and legal technique underlying these basic American institutions are well described by the late Mr. Justice Hugo Black in Northern Pac. R. Co. v. U. S., 356 U.S. 1, 4-5, 78 S.Ct. 514, 517-518, 2 L.Ed.2d 545 (1958):
The Sherman Act was designed to be a comprehensive charter of economic liberty aimed at preserving free unfettered competition as the rule of trade. It rests on the premise that the unrestrained interaction of competitive forces will yield the best allocation of our economic resources, the lowest prices, the highest quality and the greatest material progress, while at the same time providing an environment conducive to the preservation of our democratic political and social institutions. But even were that premise open to question, the policy unequivocally laid down by the Act is competition, and to this end it prohibits “Every contract, combination or conspiracy, in restraint of trade or commerce among the several States.” Although this prohibition is literally all-encompassing, the courts have construed it as precluding only those contracts or combinations which “unreasonably” restrain competition. Standard Oil Co. of New Jersey v. United States, 221 U.S. 1, [31 S.Ct. 502, 55 L.Ed. 619]; Chicago Board of Trade v. United States, 246 U.S. 231 [38 S.Ct. 242, 62 L.Ed. 683],
However, there are certain agreements or practices which because of their pernicious effect on competition and lack of any redeeming virtue are conclusively presumed to be unreasonable and therefore illegal without elaborate inquiry as to the precise harm they have caused or the business excuse for their use. This principle of per se unreasonableness not only makes the type of restraints which are proscribed by the Sherman Act more certain to the benefit of everyone concerned, but it also avoids the necessity for an incredibly complicated and prolonged economic investigation into the entire history of the industry involved, as well as related industries, in an effort to determine at large whether a particular restraint has been unreasonable — an inquiry so often wholly fruitless when undertaken. Among the practices which the courts have heretofore deemed to be unlawful in and of themselves are price fixing, United States v. Socony-Vacuum Oil Co., 310 U.S. 150, 210 [60 S.Ct. 811, 838, 84 L.Ed. 1129]; division of markets, United States v. Addyston Pipe & Steel Co., [6 Cir.], 85 F. 271, [46 L.R.A. 122], aff’d 175 U.S. 211 [20 S.Ct. 96, 44 L.Ed. 136]; group boycotts, Fashion Originators Guild of America v. Federal Trade Comm’n, 312 U.S. 457, [61 S.Ct. 703, 85 L.Ed. 949]; and tying arrangements, International Salt Co. v. United States, 332 U.S. 392 [68 S.Ct. 12, 92 L.Ed. 20].
In the Fashion Originators’ Guild case, cited in the above extract, the Court condemned a “private government” set up by textile and garment manufacturers to curtail style and design piracy by forbidding sales by members of the group to purchasers handling pirated products. The scheme violated the policy of the Sherman Act by narrowing “the outlets to which garment and textile manufactures can sell and the sources from which retailers can buy” as well as subjecting those “who decline to comply with the Guild’s program to an organized boycott.” 312 U.S. at 465, 61 S.Ct. at 707.
And in Klor’s Inc. v. Broadway-Hale Stores, Inc., 359 U.S. 207, 210, 212-13, 79 S.Ct. 705, 708, 709-710, 3 L.Ed.2d 741 (1959), it was held to be unlawful for a group of manufacturers of electrical appliances to refuse to sell (except upon unfavorable terms, impairing his competitive *453ability) to a single merchant, even if the very articles involved in the refusal were available to the public from competing retailers within a few blocks away from the disadvantaged merchant’s place of business. Group boycotts such as this, the Court held, fell within the category of per se violations. Ibid., at 212, 79 S.Ct. at 709.
This is true, even if a single seller is free to deal with whom he will, and upon whatever terms he sees fit. U. S. v. Colgate & Co., 250 U.S. 300, 307, 39 S.Ct. 465, 468, 63 L.Ed. 992 (1919).5
The preceding authorities, as well as Mandeville Island Farms v. American Crystal Sugar Co., 334 U.S. 219, 235-36, 68 S.Ct. 996, 1005-1006, 92 L.Ed. 1328 (1948), show that a restraint of trade is equally objectionable, whether it operates against buyers or sellers.6
It follows, therefore, in the case at bar that precluding appellants from a free market for the purchase of medical care violates the antitrust laws just as much as would a restriction prescribing the terms upon which a doctor was free to sell his services. (In fact, the alleged agreement or combination here also restricted the freedom of doctors to furnish service to appellants, as well as the freedom of appellants to receive service.7)
We are satisfied also that professional services are subject to the antitrust laws. Though the Supreme Court avoided that question in American Medical Assn. v. U. S, 317 U.S. 519, 528, 63 S.Ct. 326, 328, 87 L.Ed. 434 (1943), later cases indicate plainly that with regard to its economic aspects professional activity is subject to the policies of the antitrust laws.8 Goldfarb v. Va. State Bar, 421 U.S. 773, 786-88, 95 S.Ct. 2004, 2012-13, 44 L.Ed.2d 572 (1975);9 Bates v. State Bar of Arizona, 433 U.S. 350, 356, 363, 368-72, 97 S.Ct. 2691, 2695, 2698, 2701-2703, 53 L.Ed.2d 810 (1977).10
It remains to consider whether the activities alleged, being local in nature,11 substantially and adversely affect interstate commerce. 421 U.S. at 785, 95 S.Ct. at 2012. See also Gulf Oil Corp. v. Copp Paving Co., 419 U.S. 186, 195, 95 S.Ct. 392, 398, 42 L.Ed.2d 378 (1974).
The “diminished assets” theory of effect on interstate commerce applies in antitrust cases, as well as in cases involving other types of obstruction to interstate commerce.12 Hospital Building Co. v. Rex *454Hospital Trustees, 425 U.S. 738, 744-45, 96 S.Ct. 1848, 1852, 48 L.Ed.2d 338 (1976); Burke v. Ford, 389 U.S. 320, 321-22, 88 S.Ct. 443, 444, 19 L.Ed.2d 554 (1967); U. S. v. Finis P. Ernest, Inc., 509 F.2d 1256, 1261 (C.A.7, 1975); Doctors, Inc. v. Blue Cross, 490 F.2d 48, 51-53 (C.A.3, 1973).
Appellants have alleged that the conspiracy complained of restrains interstate commerce, and should be given the opportunity to prove their allegations if they can. White Motor Co. v. U. S., 372 U.S. 253, 259, 264, 83 S.Ct. 696, 699, 702, 9 L.Ed.2d 738 (1973); Hospital Building Co. v. Rex Hospital Trustees, 425 U.S. 738, 746, 96 S.Ct. 1848, 1853, 48 L.Ed.2d 338 (1976).
It is true that medical , practice per se and without more is a local activity. To bring it within reach of the antitrust laws a substantial and adverse effect upon interstate commerce is requisite. Polhemus v. Am. Medical Assn., 145 F.2d 357, 359 (C.A.10, 1944). What impact defendants’ professional activities may have upon interstate commerce in medical supplies and the like is a question of fact not susceptible of determination without scrutiny of such proof as may be offered. The impact may be de minimis; but on the other hand it may well be that appellants can “demonstrate a substantial effect on interstate commerce” as a matter of practical economics. McLain v. Real Estate Board, 444 U.S. 232, 100 S.Ct. 502, 62 L.Ed.2d 441 (1980).
Accordingly appellants must be given the opportunity to prove their allegations. Since further proceedings in the District Court will be required, the discretionary issue [United Mine Workers v. Gibbs, 383 U.S. 715, 726, 86 S.Ct. 1130, 1139, 16 L.Ed.2d 218 (1966)] with respect to the pendent claims under State law should be held open for re-examination by the District Court in the light of the facts developed subsequently. It may be that these claims will demonstrate a case par excellence under State law, which should be handled by the State courts; on the other hand, circumstances might indicate that convenience in administration of justice would be promoted by disposing of all cognate issues upon a single record. The District Court’s discretion with respect to these claims should be exercised anew after the facts have been fully developed. There was no abuse of discretion in requiring plaintiffs to pay for transcribing depositions which they initiated.
Reversed and remanded.