It looks like she whipped her shoe at the cop. Cop decided not to take shit from her and ran her face into a wall. lol.
Obviously, it seems extreme, they could have just thrown her down and handcuffed her, but they decided to bash her face into a wall. lol.
I agree with Keco to an extent, I think kids should get the beats nowadays. You see fucking 14 year olds stepping up to people like they're drug kingpins. It's retarded.