Uh, history? Almost all of it. You think that’s the history of a nice species? Or do you think everyone has spontaneously become nicer, just for this generation? We haven’t, at least not appreciably; we just have stronger institutions now to manage it.

Also, it’s way more than 4%. I’m guessing it’s a majority that would agree with that statement. There’s even religions about it. Weren’t you the one just complaining about everyone being littering savages? Hopefully you don’t just mean people not where you live - that would be a very historical thing to think.