It seems very easy. Always on spy camera installed for the express purpose of dragnet surveillance? Illegal. Film child’s baseball game? Legal.
I find this attitude I find kind of tiring. Gosh it’s just sooo hard to figure out the difference between Flock Safety and Big Bill’s Little League Sports Photography. It’s actually very straightforward to determine the difference between these two things. So easy, an idiot could do it. Or a judge.