I'm from Latin America and I'm well aware of how it was colonized. In a sense, moral relativism allows for everything. It would allow, for example, situations

I'm from Latin America and I'm well aware of how it was colonized. In a sense, moral relativism allows for everything. It would allow, for example, situations where it's ok to rape and murder children, for example (dress it as a religious ritual, or whatever). This however holds no truck with me. Segregation was bad. Slavery is bad. Rape is always bad. Genocide is always bad. It's ok to study cultures where mass rape or genocide was acceptable, while also understanding it's abhorrent. Let me be clear that I think it's ok to study and understand cultures who consider genocide acceptable, but genocide itself is never justified. More importantly, Hitler lived in an era when genocide wasn't acceptable. He created a microclimate where Nazi leadership convinced others it was acceptable (within the inner circle they were plain about it, but outside of it they used euphemism because they knew people would recoil otherwise), but it wasn't acceptable in the Western world, so he doesn't even have that excuse. This has the corollary that in the future, some acceptable practice today will likely be seen as horrendous, and I'm fine with that. But, again, we're talking genocide here, to put things into perspective.