Tim Kay writes:
The largest recorded zombie swarm to date happened on August 16th, 2008, starting at Yerba Buena Gardens at precisely 2:05 pm. They stopped traffic. They fought cable cars. They converted a group of Anonymous scientology protesters, wandered around a Falun Dafa protest against the Chinese government, through a Korean dance festival in Union Square and past a set of speakers blaring techno into the street, where the crowd moshed and chanted, "Brains! Brains! Brains!" to the beat of the music.
By the end of the scheduled route, three hundred and fifty zombies were left to wander the streets of San Francisco without direction of any kind. That's what the zombie mob is all about, and it remains the event to outdo.