The W. E. B. DuBois Clubs of America et al v Clark, Attorney General, et al., 1967 case was a significant Supreme Court ruling that dealt with the issue of freedom of speech and association under the First Amendment rights in relation to national security concerns during the Cold War era. The U.S Department of Justice had ordered the W.E.B DuBois Clubs - an organization associated with communist ideologies - to register as a "Communist-action" group under the Subversive Activities Control Act (SACA) due to their alleged affiliation with foreign entities promoting communism in America. However, this order was challenged by members who argued it violated their constitutional rights including free speech and assembly. In its decision, however, the Supreme Court upheld SACA's constitutionality but did not enforce registration because there wasn't sufficient evidence proving that these clubs were controlled or significantly influenced by foreign entities advocating for violent overthrowing of government or any form illegal activities against state interests.

In the dissenting opinion for W. E. B. DuBois Clubs of America et al. v Clark, Attorney General, et al., Justice William O Douglas argued that the Subversive Activities Control Board's order requiring the petitioners to register as a Communist-front organization was unconstitutional and violated their First Amendment rights to freedom of speech and association. He contended that this registration requirement would deter individuals from joining or associating with these organizations due to fear of reprisal or persecution, thus infringing upon their constitutional rights. Furthermore, he criticized the majority's reliance on past Supreme Court decisions which upheld similar laws during times of war or clear present danger - conditions not applicable in this case according to him.