I'm British. I was specifically taught the gruesome details of the Holocaust in school. But I only learnt about the horrors of British colonialism much later in life, and through my own efforts. British genocides are conspicuous by their absence from both our education system and our political discourse.

I don't think this makes it truly an European issue...

In general history as it is taught is almost a total loss for how biased it is, meaning that since we dropped the ball on writing it down we are doomed to repeat it until we do. So far we have only been playing at historical account, because the truth undermines national borders. But this is a global issue.