The far-left in the country have been very vocal in trying to inject into the school curriculum's, programs under the euphemism of “Social Justice”, which includes CRT (Critical Race Theory) and the 1619 Project, that are particularly deficient in historical fact. When you confront those radicals, they claim they do not teach that type of dogma in the schools, but it seems that the teachers' unions and school administrators are turning a blind eye as to what is really going on in the classrooms around the country.
As a retired teacher, with over 30 years in the classroom, I can vouch that when that classroom door closes, the teacher can direct his personal feelings into the course curriculum, and that is what parents around the country observed and are now complaining about due to the “virtual” teaching that became the prevalent form of teaching during the pandemic. I, as a business teacher, plead guilty about my championing our free enterprise, capitalist system in my classroom, as that is what our Founding Fathers gave us in the Constitution. I tried to instill pride in our country and our economic system, and to try not to undermine the social mores of the country. It was during the pandemic, as students were doing “virtual” learning at home, the parents were able to observe what their children were being taught, and for many they didn't like what they were seeing as to what was being taught to their children.