"i wonder what really goes on when nobody else is looking..."
When no one is looking...or listening too?
No CSA went on in my house as a kid, but the violence was off the freakin hook!
I know I was often loud enough for the neighbors to hear --- even in the cold weather when the windows were closed. I know, because kids from surrounding houses would tell me they heard.
But no matter, in the late 60 and early-to-mod 70s, proper white-bread families were not messed with when it came to child abuse. The term "Child-Abuse" did not even exist for people outside "inner-cities."