If he did that on live TV knowing everyone was watching, wouldn't be surprised to here some stories about what he has done in other situations when cameras weren't on.
Exactly. I'm wondering if he escalated or de-escalated on the way up. Was his original intention just to go up an interrupt and then he boiled over and decided to slap, or was he going up there with the intent to punch him but "cooled down" to a slap only. Not that it really matters.