A Critical Mass bike ride in Ft. Lauderdale got a little out of hand last Friday night. It depends which side of the story you want to believe, but it appears that the group of bicyclists was preventing car traffic from going past them, the police got there and then there was a take-down. The last part was caught on video. Click title for link and make sure to read both pages as the other side of the story is part of a comment that appears on the second page.
Later, I found this video on YouTube of one of their Broward Critical Mass rides from last June. They use both traffic lanes and send people to block traffic until they are out of the intersection. No wonder they had a brush with the law.