Having a television or radio blasting propaganda into your living room is real. It's an actual physical thing, it's not a concept. So is the Facebook app, and t

Having a television or radio blasting propaganda into your living room is real. It's an actual physical thing, it's not a concept. So is the Facebook app, and the social dynamics that prevail on it. So are screens in general. I'm sure that the optimal amount of all those things is non-zero, but it's possible that it's also not 'all day, every day.' It's not unreasonable for schools to restrict this, just like it's not unreasonable for a school to restrict you from bringing a mariachi band with you to class.