I don't care where it was. I could possibly accept the initial take down IF the fighter was out of control, but not the follow-up kicks to a downed opponent!Where did this take place? It's true that in the states we don't generally tolerate this kind of behavior, but if this is in another country, who knows what their acceptable referee behaviors are. I'm not trying to justify what this guy did, but I'll bet that fellow thinks twice before breaking the rules of that organization again.
I've reffed a few bouts; there have been a few times where I did have to use some force to separate fighters. But I only used enough to get them apart and protect myself -- I didn't take them down and stomp them! The way to stop a fighter who's not playing by the agreed rules is to disqualify them and stop the bout -- not ignore it till they do something that makes you have to hit them!