In that suit, which was filed last week, Makia Smith says she was stuck in stand-still rush hour traffic in March 2012 when she saw a group of cops beating up a man.
She stepped out of her car, stood on the door sill and began recording.
She was quickly confronted by an aggressive cop named Nathan Church, who grabbed her phone, threw it on the ground and smashed it with his foot.
"You want to film something, bitch? Film this," he yelled.
He then proceeded to beat her.