In school dis­tricts through­out Amer­i­ca, par­ents are demand­ing that teach­ers stop instruct­ing chil­dren about gen­der flu­id­i­ty and Crit­i­cal Race The­o­ry. They also want porno­graph­ic mate­ri­als removed from  school libraries.The authors of the new book, Bat­tle for the Amer­i­can Mind: Uproot­ing a Cen­tu­ry of Mise­d­u­ca­tion, say social­ist beliefs like these weren’t intro­duced overnight – they start­ed creep­ing into U.S. pub­lic school more than one hun­dred years ago.