408 U.S. 104 (1972) Cited 4,774 times 6 Legal Analyses
Holding that a statute's words, even when "marked by flexibility and reasonable breadth, rather than meticulous specificity," are clear based on "what the ordinance as a whole prohibits"
512 U.S. 622 (1994) Cited 1,328 times 7 Legal Analyses
Holding that rules that distinguish "based only upon the manner in which speakers transmit their messages to viewers, and not upon the messages they carry" are content-neutral