It's blatant psyops by the oligarchs. They're trying to brainwash people into being racist so it splits us up and makes us all easier to subjugate. They're trying to dismantle dept of education even. Also pay attention to how they talk about reality. Republicans have been blatantly lying in bad faith to help the rich at the extent ense of the poor for many decades. It's gotten so bad they're having to tell you not to believe your own lying eyes.
That's how they do it. They blatantly lie repeatedly on television and it actually works for most people. Even after Fox News was caught with a lawsuits and had to admit they are only an entertainment company a lot of Republicans still believe them. I've even gotten into arguments with family members about their being "two separate realities" um ... No. No, there is simply reality, and your reaction to reality. It's so pathetic.
As far as the sudden shift into blatantly racist content, they figure you're a bunch of sheep that'll follow whatever behavior you see on the screen. They're often right at least to some extent. They're expecting you to follow and not think.