Given their long time being opressed, it's probably unfair to criticize Blacks for voting so overwhelmingly one way. However, the policies put in place by that "one way" may not be doing Blacks, or other groups with significant segments stuck in poverty, any favors in the long run. I suspect that's what Mr. Sowell might have been getting at.
I can go with that. It's basically the same thing you see on the conservative side, where people have been voting for the "lesser of two evils", but ultimately not happy with what they get, and the promises they've been "winning votes" with not being kept.
Both sides are voting for their own self-interests, which is supposed to be what the basic right of "freedom" is about. If the politicians are deceiving the electorate and not solving the problems, then that's something that needs to be addressed on
all sides, not just one side (and questioning the character of the voters on that side, like the whole "they just want free stuff" and "they are SO 'problematic'" jargon, let's not forget), as people are insisting.