Answer: Schenck v. United States (1919)
Debs v. United States (1919)
Gitlow v. New York (1925)
Chaplinsky v. New Hampshire (1942)
United States v. O'Brien (1968)
Tinker v. Des Moines (1969)
Brandenburg v. Ohio (1969)
Cohen v. California (1971)
Explanation:
Here are some:)