Commanding your less than intelligent minions to “knock the crap out if them” is an incitement of violence.
You know, he could have said “ask them to leave” or “get security to handle the situation”.
Also, while throwing a tomato is assault. Beating people is also assault. But I think we’d all pick a tomato to the face, over a bunch of mouth-breathing idiots assailing us with their feet and fists.