So, I had a conversation with my sisters husband about politics, he gifted me a book (the power of geography) , which he claimed to be leftist..... because it merely mentioned colonialism. He framed that as anti-white racism and how we, the 'whites', should be proud of our 'accomplishments' and how it's badass that 'we' conquered the entire world.
He then further went on to mention that after colonialism 'ended' the natives didn't know how to do anything, because they kicked the smart whites out.
What the hell do I do about this nutjob? Is there any hope for him? Should I even try to convince him that he's an absolutely moron?
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.