Comment by true_religion

I get what you’re saying but it’s a false premise. In today’s era, racist parents already block their children from even attending school with someone of a different color. Merely blocking comms would be a step before that in severity of control.

Parents have always had the ability (though maybe not explicitly the right to) control their children’s environment for the purposes of teaching personal beliefs. So long as the belief itself wasn’t deemed harmful to the child, society would allow it to continue propagate that way. Racism unfortunately has never been seen as innately harmful. It’s looked down on, yes, but not to the point of making it illegal to enforce in family life.