Just to add to
@One Brow's posts, it's a theory taught in law school (if it's taught anywhere). It isn't taught in K-12 schools. In fact, most of the social studies educators I've spoken with don't even know what it is. It also makes sense to teach it in law school since the basic framework is that race and racism have had a much larger impact on our country than just slavery and Jim Crow. Race and racism have impacted the economics, social fabric, and laws in our country. Which is why law schools may want to teach their students about it. It makes sense for law students to know why most in prison are POC, why we'll throw the book at a black person with a sandwich bag of weed while give a white guy who embezzled millions a tap on the wrist, and the issues with policing in urban areas.
While some countries have a caste system based on religion or economics, ours is largely based on race. This is essentially the backbone for CRT:
Coined by legal scholar Kimberlé Crenshaw, Critical Race Theory is the practice of interrogating race and racism in society that emerged in the legal academy and spread to other fields of scholarship.
www.americanbar.org
Lastly, the right has found its new ACORN/DEATH PANELS/BENGHAZI/ETC, and that is CRT. They tried Hunter and Dr. Seuss as a rallying cry to distract from their own party's failures and to attack Democrats, but neither stuck. This one did. This guy appeared on Tucker and ever since then, CRT has taken off. He already explained his strategy in March:
Look at what happened to Fox News since Rufo's pronouncement talk of Dr Seuss and Mr. Potato Head dropped and CRT took over:
The other reason why CRT has taken off is that those predisposed to already believing that POC have it easy and just need to "pull themselves up by their own bootstraps" feel threatened by it. If they admit that being white has benefitted them in some way they then feel like they're not as manly or as accomplished as they deserve. So you can see why those predisposed this way would hate CRT; it calls for vulnerability and honesty. Something they don't want to do.