 July 12th, years ago. How many years ago? I'm not quite sure, actually. But I think it was in the 70s. An angry reaction to the popularity of disco music. Remember the Chicago White Sox held the Disco Demolition Night promotion in which a crate of disco records was blown up on the field between games of a doubleheader. The ensuing riot and damage to the field caused the White Sox to forfeit the second game. Not a good promotion. Not a good promotion at all.