McLaughlin obviously has some issues to get through. Unfortunately, he's not the first or the last parent to blow a gasket in the stands and act poorly. He seemed to react when one of the officials knocked over his son. However, he ends up blindsiding the other official for whatever reason. Probably because he was totally out of control.
Beyond McLaughlin there's so many things going bad at the end of that game. McLaughlin's son obviously. Takes a swipe at the ball from behind at the buzzer and then shoves the player (who probably said something walking off). Then the bigger player comes in and goes "Maurice Lucas" and knocks McLaughlin's son to the ground. Finally, the official that wasn't blindsided runs in and knocks McLaughlin's son to the ground. Obviously wasn't intentional but came in too hot. Just a total cluster.
This got in the news because it's a former athlete, but I bet this kind of situation happens a lot more often than people think. Having been at multiple athletic events of my kid's there are a lot of parents that have no business being allowed into games/matches because of ridiculous behavior.