A Cincinnati, Ohio, ordinance makes it a criminal offense for “three or more persons to assemble, except at a public meeting of citizens, on any of the sidewalks, street corners, vacant lots, or mouths of alleys, and there conduct themselves in a manner annoying to persons passing by, or occupants of adjacent buildings.” Coates, a student who became involved in a demonstration, was arrested and convicted for the violation of this ordinance. His argument on appeal was that the ordinance on its face violated the Fourteenth Amendment. Is this a valid contention?