Doing physical violence does not make someone any more of a problem than they already were just by being alive. Is lying to get someone fired any better than beating them up and stealing their car? Of course not. Violence is substrate-independent. If something matters, humans will both use it to hurt others and hurt others to keep them from using it.
Yes, humans are collective. The tricky part is that they are only as collective as they need to be. Humans adaptively adjust how evil they are to take as much as they can without being retaliated against or burning everything down. Mostly. All the hardwired instincts are buggy and outdated, so they often vastly misjudge the situation.
People do in fact do good, mostly when their surroundings are too broken to survive being evil. But quite a lot of people mostly do good most of the time, because evil is so good at destruction that you need an awful lot of good to even come close to counteracting it.
I mostly think of myself as a good person, but I know that unless the local community is really good at keeping people from hurting others, doing good deeds mainly just supports other people doing bad stuff. It is theoretically possible to go an entire life without hurting others or having your works twisted to hurt others, but your descendents will have the same statistical chances of being evil as everyone elses'. (Plus, minds nudge people to cheat and do bad things whenever they can still think of themselves as good. I am not immune to that. I cannot rewrite my mind to remove the rootkits installed by evolution)
> ..."Sacrifice" them? They are already marked for demolition but the local powers work with the speed of a glacier. You are starting on the entirely wrong premise, I am not surprised that you drew very wrong conclusions.
If people have tents filled with whatever they can get their hands on to help them survive, having the police force everyone away so they can destroy everyone's stuff does in fact count as sacrificing their belongings. You are still only focusing on the ways homeless people slight you, and not on the way homeless people are hurt. "How dare they use buildings we aren't using and haven't cared enough to destroy! Something must be done immediately!". But you just ignore police destroying tents and sleeping bags right before winter, like that isn't going to be directly responsible for a lot of people's deaths.
I understand that in this terrible world everyone is drowning, but that isn't an excuse to pull down other people again and again.
Though the sacrifice part is more for things like civil asset forfeiture. If you let the police seize large amounts of cash from people, you shouldn't let the police keep it. In fact, seizing property should decrease the police budget by a small amount, so they only do it when they think it is actually important. If you claim that hurting another person is super important for society to do, you should willingly hurt yourself to show you are selfless in your intentions.
> I have sympathy for you until you draw a knife and command me to give you my wallet. There the sympathy stops. Unconditionally.
I have slightly more sympathy for people who use physical violence than people who hurt in other ways. Or at least I think people overreact to it because it's pretty much the easiest form of evil to detect. If a doctor systematically doesn't actually attempt to diagnose problems reported by women and just tells them to lose weight, they can easily do as much damage as a cannibal serial killer, and be as deserving of death, but it's way harder to tell they are doing it. (And if an organization were to be created to investigate doctors for this, it would either be irrelevant or twisted into a weapon at the expense of its purpose. Nothing that matters can be good)
So do I like everyone? Do I want everyone to die, including me? Am I an optimist? Am I a pessimist? It changes from moment to moment.