Appellant Paul Robert Cohen was convicted in the Los Angeles Municipal Court of violating that part of California Penal Code ? 415 which prohibits "maliciously and willfully disturb[ing] the peace or quiet of any neighborhood or person . . . by . . . offensive conduct . . . ." He was given 30 days imprisonment. The facts upon which his conviction rests are detailed in the opinion of the Court of Appeal of California, Second Appellate District, as follows: