>>5971345
Unfortunately, people are more programmable than you think. It does take a lot more repetition than a single presentation to develop a schema of abstract ideas like "good" and "evil", or going through a lot of pain yourself and coming out the other side wishing that no one have to go through that (not everyone does). But "growing a heart" isn't something you can count on people doing. We hope and try to mold people in such a way that when they see suffering they try to stop it.
But once you fall into too much of an echo chamber, all empathy slowly gives way to impulses to virtue signal. so you fit in and don't get punished and get to advance your position by punishing others for saying stuff contrary to the consensus of the echo chamber.
I'm trying to say that if, in the end, there was no one left but people like that guy, who claim they'd happily engage in tribalistic violence because that's in keeping with loyalty to "his people" (in his case, those in the same echo chambers as him), there wouldn't be anyone to tell him he's mentally ill. And if he continues to help his people after that, at least empathizing with his fellow echo chamber dwellers, he's still functional, and perceives the same reality as the rest of whoever is left.
There is of course such things as senseless violence, where no body really benefits from the suffering in a way that could ever be reasonably called worth it from any point of view that's reasonable in any social circle. Stuff like an opportunistic robber who kills for a wallet, or stabs a random woman on the subway.
I don't think I'm a better man for seeing things this way. I'm just forced to recognize that I've been put into a box characterized by my skin color, and have seen calls for violence against that box. I can never leave this box until enough people change their minds about it. So, I have to be prepared to hurt people who would harm those in my box, if I want anyone else to help protect me.