Former President Donald Trump has weighed in on the national debate over the teaching of Critical Race Theory (CRT) in schools, urging lawmakers and parents across the nation to act against what he called “toxic” and “anti-American” indoctrination. “In classrooms across the nation, students are being subjected to a new curriculum designed to brainwash them with the ridiculous left-wing dogma known as ‘critical race theory,'” Trump wrote in an op-ed published Friday on RealClearPolitics. “The key fact about this twisted doctrine is that it is completely antithetical to everything that normal Americans of any color would wish to teach their children.” The CRT is rooted in the Marxist theory of class struggle, but with a particular focus on race. Proponents of CRT see racism in every aspect of the American public and private life, and seek to dismantle American institutions—such as the Constitution and legal system—which they deem to be …