Interesting.................your Google search has the definition of verbal assault, and in it, physical violence must be threatened. Here............from your link..........
Verbal assault usually involves threatening physical violence on someone, although sometimes yelling or aggressively using words to offend or attack someone can constitute verbal assault. The threats must be something the assailant is capable of carrying out, and which cause fear of imminent danger to the victim.
Sanders being asked to leave the restaurant doesn't qualify as verbal assault as there were no physical threats implied.