The sort of thing their race-based understanding of power ignores: Census Finds Record Gap Between Rich and Poor.
How their ethics work: Kill Whitey. It’s the Right Thing to Do.
Their flawed approach to activism: Small Change: Why the revolution will not be tweeted.
Anti-racists remind me that no one's more dangerous than a crusader. They believe their cause justifies anything they do, including death threats and lies.*
Something that cannot be said often enough: They're racists, no different in kind than the people who call themselves racialists or racial realists. If you hope to get them to acknowledge that a reasonable person might doubt their faith, cite people of color like Thandeka and Adolph Reed Jr. (Mind you, anti-racists don't mind that the most prominent figures in anti-racism are white. All faiths can bear contradictions.)
* I sometimes wonder if I'm the only person in the world who has received death threats from both racists and anti-racists.