You are mistaken. It was written by Oliver Wendel Holmes writing for a unanimous court in Schenck v. United States: https://en.wikipedia.org/wiki/Schenck_v._U

You are mistaken. It was written by Oliver Wendel Holmes writing for a unanimous court in Schenck v. United States: https://en.wikipedia.org/wiki/Schenck_v._United_States https://en.wikipedia.org/wiki/Schenck_v._United_States Granted that decision was later partially overturned, but the general principle that the first amendment protections are not absolute remains in force, and there are many extant examples: libel laws, laws barring false advertising, and laws against incitement of violence are all constitutional.