The part he's wrong on is that it's not the politicians that are trying to get rich vs poor or right vs left. It's the rich. They have the power but they need something to get the masses to align with them to give them more power and money and act against the masses own self-interest. They are able to divide the working class with these wedge issues and lobby the politicians to push the points to gain the votes.
How American oligarchs created the concept of race to divide and conquer the poor
Pretty similar territory to the issues raised by Heather McGhee
A drained swimming pool shows how racism harms White people, too
If you're a White person who thinks racism only hurts people of color, consider Heather McGhee's story of an empty, abandoned swimming pool in Missouri.
...though I still think there's a degree to which racism exists independently of class. It's so obviously completely intertwined, though. Perhaps particularly in the US.

