Dear guys: you have no idea what your reactions would be because you are not women and this has never happened to you. Your opinions are less than worthless. In fact, different women react in different ways in different circumstances. If you were a professional entertainer assaulted in a professional setting, as she was, you would wait until you were off camera to inform your staff and his employers rather than make a scene. 

Furthermore, it doesn't matter what she was wearing under her skirt, you pervs. I don't care if she was bare-ass nekkid, grabbing her ass was assault.