For everyone defending the cop.. you need to look at the video again. The cop ran TOWARDS the bicyclist and pushed him over HARD. I don't know how often you guys ride bikes but it doesn't take much of a blow from the side to knock you over off the bike.

That guy ran at the bicyclists like he was a linebacker for the packers or something.

However I was not at this event and can only comment on the video. There may have been a legitimate reason for his actions.