Socialists will use any source that's accurate: that's why Marx and Engels used the London Times. If you have evidence that what I've cited is wrong, please share it.

Yes, Jim Crow was awful, and so is US class mobility. But why do you think racism was so bad that nine white homeowners would be punished for every black one?

So far as I can tell, today's rich love race reductionism. Why else would the NY Times promote the 1619 Project?