The runner-up for the most imitated contemporary black-and-red visual icon in the world (after I [Heart] New York designed by Milton Glaser) goes to:
OBEY THE GIANT designed by Shepard Fairey*
(*Yesterday, Felix Sockwell sent me his recent “Obeyma” (above), which inspired me to trawl the internet for more examples. Three-and-a-half hours later, I had more than 30. A few selections below.)