What is it about the middle of April that makes all the crazies finally flip their wigs?
OKC bombing - April 19, 1995
Columbine - April 20, 1999
V-Tech - April 16, 2007
And also the Waco Branch Davidian thing, that was on April 19, 1993. Not exactly the same as the others, but it's still a bizarre, entirely unnecessary incident worth mentioning.