Mutual Film Corp. v. Industrial Commission of Ohio
Mutual Film Corporation v. Industrial Commission of Ohio, 236 U.S. 230 (1915), was a landmark decision of the US Supreme Court ruling by a 9–0 vote that the free speech protection of the Ohio Constitution, which was substantially similar to the First Amendment of the United States Constitution, did not extend to motion pictures.
Source: Wikipedia — Mutual Film Corp. v. Industrial Commission of Ohio (CC BY-SA 4.0)