A bicyclist who is charged with attacking a Zipcar driver with a U-lock during a Critical Mass event last month made his initial appearance in…

A bicyclist who allegedly attacked a Zip Car driver with his U-lock during last month’s Critical Mass event was charged today with four felonies, prosecutors…

Police arrested a man Saturday on suspicion of committing road rage and vandalism after a Critical Mass bike event last month in San Francisco, police…