Justice is only one (overly simplistic) way of organising humans. It exists to discourage behaviour that harms others, but in my opinion it is way better to encourage people to do things for the better instead. Humans are cooperative creatures and a social order based entirely on tension is extremely unproductive.

And don't get me wrong, a lot of things in society deserve to be criticised and discouraged. But dealing in absolutes and assigning blame to an entire group of people is almost always overly simplistic and won't get you anywhere.