Civil rights & First Amendment

NAACP v. Button, 371 U.S. 415 (1963)
Edwards v. South Carolina, 372 U.S. 229 (1963)
Garner v. Louisiana, 368 U.S. 157 (1961)
NAACP v. Alabama, 357 U.S. 449 (1958)

Richards, Robert D., Freedom's Voice: The Perilous Present and Uncertain Future of the First Amendment, Brassey’s Inc. (1998)