Don't Fear the Butt

Why are we in America so afraid of adult butts but not baby butts? Like every time there's a news story about cops chasing some drunken naked criminal, they have to make his naked butt all blocky? Yet somehow it's fine to show a bunch of naked baby butts in a diaper ad? This just seems backwards and twisted to me. I mean if someone is running around all naked and shit in public, they
obviously want to show off their butts, so let us see that if we want to; it's obviously ok with them, right?
Baby butts - I really don't need that shoved in my face while I'm trying to watch an episode of Rockstar Supernova; it just totally harshes my buzz ya know?
So if they're blocking out adult butts because they think people may some how find them offensive, how are baby butts any different? Still human butts just smaller right? Fucking double standards man!