Here's an obvious one: As a society, we went from a period of it being socially acceptable to marry ridiculously young girls as an old man to the present day w

Here's an obvious one: As a society, we went from a period of it being socially acceptable to marry ridiculously young girls as an old man to the present day where it's unheard of. People will point to the law being the reason for this, but that's not actually the truth, really. The age of consent isn't really that high; in many states it's unrestricted at sixteen and much lower with loopholes. Also, in many cases, the raising of the age of consent is a historically-recent thing that followed the shaming. We've managed to (largely) eradicate the case of "man finds a fourteen-to-sixteen year old girl and erases her future by making her responsible for children" in under a hundred years, and it came from shaming, not law.