i would not want other parents to be able to see what my kids are doing in school. despite the best intentions some actions are going to be miss-interpreted and i fear parents will look at how much attention the teacher is giving to their child compared to others. this will only encourage the few karen-type parents out there to make a noise in detriment to everyone else who don't care or don't have the time to watch.
parents should stay out of the classroom and trust the teachers to do their work.
Not never, but typically, yes. It's hard to have a functioning society otherwise.
(And yes, the police thing isn't a universal problem, it's an American problem. Most of the Western world manages to function just fine without treating law enforcement as an occupation force.)
parents should stay out of the classroom and trust the teachers to do their work.