Somebody caught this arrest on video Saturday night: a very obnoxious drunk guy starts screaming and generally making a nuisance of himself -- all while brown-bagging it -- as the train is stopped at West Oakland Station. A BART police officer quickly moves in and pulls the guy off the train, and pushes him across the platform where (it appears) his head ends up going through one of the glass barriers on the other side. While some might cheer this valiant effort to remove a drunk asshole from a train, others are raising questions about the officer's excessive use of force.