I didn't want to start a comment war of Europe against USA. I'm saying that from my outsider point of view, with an European education that taught me about slavery, colonialism, and a little of finance, USA has an obvious ingoing problem with skin colours and racism. I don't really think us European are behind the curve, we are just on another line. We are not perfect too, and we haven't been in the past. You mention slavery and colonialism I will add the too many genocides. We can take, and we do take lessons from USA, sometimes a bit late yes. USA could also take lessons from Europe, we have some experience about what not to do.