Halloween Critical Mass, San Francisco, 10/31/08: photos and video

Here's some cell phone pix taken while riders gather at Justin Herman and 15 minutes of video as riders embark on their journey through the streets of San Francisco on this All Hallows Eve. Images and video are low-quality, but they capture the excitement in the air for this ride. At least a half a dozen mobile sound systems were noted. Where they are going, no one knows.