I think your examples touch on the enforcement of certain norms, not on the change in the reigning social view. In other words, in the 90s neither the average man on the street nor the ruling class would agree that publicly assaulting gay people or workplace sexual assault are anything but immoral. Both were also still crimes at that time, of course. I'm also not quite sure that workplace incidents of that kind have declined substantially up to the present, but I'd be interested in seeing data.