This is only the tip of the ice berg regarding what happened that night, and what happens every single night to people in jail. Almost all of us had bruises on our arms from the way the cops handled us, despite the fact that no one in my group had even remotely resisted arrest. Our rights were violated due to police abuse of authority and police brutality at a peaceful protest against police abuse of authority and police brutality.
Go read the whole thing. Small wonder my parents never wanted me to go.