Not really, no. Islamic terrorist propaganda has been banned for a while, and before that there was the Red scare era, where it was (and still is) illegal to be

Not really, no. Islamic terrorist propaganda has been banned for a while, and before that there was the Red scare era, where it was (and still is) illegal to be in the Communist party. Plus you had all the McCarthyism. Let us not also forget the Civil rights era, and all who were silenced and even killed for their speech then. So I'm not really sure what time period you refer to where there was truly free speech in America?