Exactly.

Even worse, when you aggressively put a negative label on some group, in time they will become so pissed off that you will lose them as your allies. They will likely develop a mindset of "If you hate and despise me and my kind, why should I be on your side?!?".

IMHO it's important, for a father, to remind their children that "not all men are like that" so they will develop a realistic view on reality (instead of a hysterical, fear-based one).