Well, it&#x27;s tricky drawing that line isn&#x27;t it?<p>19th century science proved that native americans, the irish, ... well basically everyone but the scientists themselves were inferior beings. The people who held those views didn&#x27;t secretly believe that everyone was equal and they were making up lies for political advantage. They geniunely thought they were documenting objective facts about the inferior races according to science even though we can see from our perspective that it was all self-justifying nonsense.<p>But if you&#x27;d asked them they&#x27;d say, yes, fine don&#x27;t be mean, but this is valid criticism based on observable phenomenon.