That's nonsense...Right-wingers had to invent CRT to keep slavery and prevent blacks from gaining the franchise.
"Marxist thinkers invented critical race theory (CRT) in order to upend society by claiming that hidden racism pervades American institutions. CRT teaches people to seize on any racial disparity as ipso facto proof of racial discrimination, despite the clear prohibitions on racial discrimination in federal law. Advocates claim that the American status quo is racist — if not “white supremacist” — so extreme measures to reverse historic injustices are the only “anti-racist” option.
Critical race theory teaches Americans to focus on skin color, reversing the ethic of Martin Luther King Jr.’s “I Have a Dream” speech. It often involves demonizing “whiteness,” which some activists have defined as including everything from a good work ethic to capitalism to Christianity."