First of all, he's a fucking kid. Israel is supposed to be a grown man. When Alex is laying there stone-cold unconscious that child doesn't know if his dad will ever wake up again. Israel knows and understands the realities of what they're doing in there. A 6 year old child (estimated age when the little boy mocked an out-cold Israel) has no clue what the fuck is going on. A 30+ year old man going eye-for-an-eye in such a sadistic way with a fucking child over something that happened when said child was 6 years younger? I shouldn't be surprised the vast majority around here think that's so awesome, but I am. Then again, I think you're the same one who thinks Jon Jones is not a multi-time PED cheat. Still being surprised by people around here makes me almost as naive as you are.
Second of all, what makes you "pretty sure" of that? If it was the same countdown video I saw, the producers actually ask the child to relive what happened and explain it. Of course due to editing you never hear them asking questions, but they're in the back of the car with him and clearly bring it up. The kid just shrugged and briefly explained it for them. Not exactly the scathing mockery you're making it out to be, but maybe you saw some stuff that I didn't.
Which, either way....you don't do something like that to a kid who doesn't know if his dad is alive or dead.
This might all be a moot point, because I have yet to see proof that's who Israel was doing that to.