Well, that mural at Burgundy and Dauphine is untouched, but a really nice "Welcome to the Bywater" sign by folk artist Dr Bob has been defaced:
It was even complete with part of a trademark phrase of his, "Be Nice Or Leave", as this link shows (thanks, Loki):
Okay, the gloves oughta be off over this one.
I'm thinking point-blank paintball duel - gray pellets in Radtke's weapon, all the colors of the rainbow for Dr Bob. The one who gets the most shots in has to wear their paintballed garb for a month.
NOTE, 7:15 PM: Kevin Allman is right in that nobody has witnessed Fred Radtke actually doing this...and, judging from Sophmom's comment below, I'm starting to hope, for his sake, that he didn't do it and that this might be some sort of copycat...because, quite honestly, this is awful, and if it IS him, then he needs help for whatever mental problem he has.