Facts of the case: Brandenburg, a leader in the Ku Klux Klan, made a speech at a Klan rally and was later convicted under an Ohio criminal syndicalism law. The law made illegal advocating "crime, sabotage, violence, or unlawful methods of terrorism as a means of accomplishing industrial or political reform," as well as assembling "with any society, group, or assemblage of persons formed to teach or advocate the doctrines of criminal syndicalism."
Question: Did Ohio's criminal syndicalism law, prohibiting public speech that advocates various illegal activities, violate Brandenburg's right to free speech as protected by the First and Fourteenth Amendments?
Though Trump’s impeachment is not a criminal trial, his lawyers in their legal briefs referenced Brandenburg v. Ohio, arguing that Trump didn’t direct his supporters to attack the Capitol. House managers prosecuting the case took the opposite view on Brandenburg and Trump, saying he crossed the line set up by the Supreme Court.
Brandenburg v. Ohio, 395 U.S. 444 (1969), is a landmark decision of the United States Supreme Court interpreting the First Amendment to the U.S. Constitution. The Court held that the government cannot punish inflammatory speech unless that speech is "directed to inciting or producing imminent lawless action and is likely to incite or produce such action". Specifically, the Court struck down Ohio's criminal syndicalism statute, because that statute broadly prohibited the mere advocacy of violence. In the process, Whitney v. California (1927) was explicitly overruled, and Schenck v. United States (1919), Abrams v. United States (1919), Gitlow v. New York (1925), and Dennis v. United States (1951) were overturned.