Anarchists will really try to rip us apart for being “authoritarian”, but when you ask them how their system would deal with crimes, upholding socialism, or maintaining any semblance of order, their responses are almost always far more extreme than ours.
Genuinely had an Anarchist call me an “evil person” and a “future baby killer” for saying that I’m ML. Then when I asked them about their proposed methods for preventing counter-revolution, they described a system where anyone can murder anyone else if the victim was suspected of wanting to act against the revolution. No trial, no investigation, just the word of the murderer.
Edit to add another thought to; “their responses are almost always far more extreme than ours.”
If it’s not more extreme, it’s lax to the point of being nothing. So the poles are either a system of total chaos, or substanceless idealism.
There’s not a lot that can be done if they’re unwilling to learn.
You could try to explain the lies colonialists told, and the systems of oppression they built. You could try to show them the direct results of colonialism, like the famines, the reservations, etc. But if they’re closed off from accepting that colonialism was an evil system, perpetrated by white supremacists, you won’t be able to fix their issue.