That's what I mean: he apparently had issues with containing own instincts. And by saying "I am afraid I won't be able to contain myself" you actually state more-or-less the same — that you're aggressive and prone to act aggressively against your own better judgement.

Yeah, sure, people like him that should be shunned, and preferably prosecuted. But, actually, one of the reasons they feel free to do things like that is the culture of domination that's not really hurt in any way by people making violent remarks about them.