The people were there protesting. Not sure what since they cut the video so we didn't see what they were doing beforehand, but it was enough of a disturbance for the police to be called. It was obvious by their behavior that their goal was to get "beat up" by the police on video. When the officer explained what they aren't allowed to do, they did it. When the officer's made the arrest, they resisted. They didn't swing, but pulling away is resisting. If an officer uses a low level of force, and is met with resistance, he is allowed to raise the level of force. Instead of striking them, using a baton, pepper spray, or taser, the officers took them to the ground and handcuffed them. I understand that some people just have a dislike for the police, and the rules they enforce, but this was not a case of police brutalilty.