In Palmer v. City of Euclid, Ohio (1971) 402 U.S. 544, the Supreme Court struck down an ordinance that made it illegal for any person to "wander" about the streets at "late or unusual hours" in the night without any "visible or lawful business" and who could not provide a "satisfactory account" of himself. The Supreme Court concluded that the ordinance was vague and lacking in ascertainable standards of guilt and that it failed to give a person of ordinary intelligence fair notice that his contemplated conduct is forbidden. (Palmer v. City of Euclid, Ohio, supra, 402 U.S. at p. 545.)