City of Kent v. Kelley,  (1975) 44 Ohio St. 2d 43, still good law today.  Young man asks about 40 riot geared police "what the fuck" they are doing and tells them to "get the fuck away from that door." After they get done splitting his head open they charge him with disorderly conduct/disturbing the peace.  His head healed and the Ohio Supreme Court said it was protected speech.