Look at the longer clip.Abe explained, she assumes her life is about to ruined without her having an opportunity to have her side of the story heard.
Is there footage of her using racist language? It's a little odd at one point he claims she used a slur, but for the most part he seems more concerned with her flipping him off.
If she used racist language, whatever. Personally I don't feel anyone needs to be humiliated for flipping someone off, and I can understand her reaction if that's the case.
Even if there were no racism involved (there was, but lets just say), she didn't just flip him off. She followed him for several blocks AND brake checked him. Witnesses on the street confirm.