Some dude was spotted running around the Richmond leaving piles of white powder next to telephone poles, all along Balboa from the beach eastward. The SFFD hazmat team was subsequently called in to test the powder, which turned out to be flour. The culprit turns out to be some kind of running club, but for god's sake... this would have never flown ten years ago in the wake of all that anthrax panic.
The Hash House Harriers, which dubs itself "a drinking club with a running problem," are to blame, as they often use flour to mark their courses. (They held on event on Sunday, hence the marking.) And according to the Richmond Blog, they're amused by all this anxiety they caused. DON'T THEY KNOW WE ARE STILL LIVING IN A WORLD WRACKED BY TERRORISM?!