Each of your examples I looked up and there is either not eboug information about them to make these judgements or there is vague information that refutes your claims.

For example:

CNT/FAI had and used prisons.

In anarchist Ukraine you had the so called Black Guards which acted similar to police and they had groups like Black Banner and general tried to overpower each other all the time.

In the region reigned by Zapatistas the Mexican Army and National Guard's handle crime with Zapatistas even claiming they don't do enough and should do more against the violent crime there.

Wendat have hierarchical structures with a Grand Chief and a Chief of each family.

So, if a country can “decide” this, why can’t a community “decide” it?

I don't say they can't. I say they can't do it without some form of police who enforces the rules they decided on in some way.

Ever heard of racism in the police? And you claim that I don’t acknowledge my privileges.

What makes you believe a smaller group of people is less racist? I'd say it's the other way around.

You have to do so today. If you don’t notice that, that’s because you fit in.

I very much do not fit in. And everytime someone helped me in the past it was police or some other state infrastructure. Definitely not my neighbours who would probably just cast me out as a burden.