I don't think it's shame so much as barriers. In the real world, there was always a degree of what kids these days would call "fuck around and find out". Be it a kid that was bigger than you, or a grown up who would give you a clip around the ear. That doesn't really exist any more.
Back in the early days of camera phones there was a trend called "happy slapping" where chavs would run up behind people and hit them on the back of the head. But there was always a percentage of videos where they do it to some pro fighter or a plain clothes cop and "find out", usually with a broken arm, a broken nose, or an assault charge. Recently was a clip I saw of a kid taking food from other people's plates. No one did anything, and when one person does leave their seat and raise their voice, there's obviously some handlers/body guards/muscle stepping in to protect the kid, but the clip ends at that point. There are various prank influencers that go to far, but their victim gets hit with a jail sentence.