For a long time, ""Holywood"" (anyone wanting to make stories with a element of social commentary which aren't miserable) has framed racists* are "the most rigid and dogmatic of people". * in the mass - individual badguys obv can have diff properties

In reality, it's pretty much the opposite and this has been known since people started studying this in earnest in ahem 1945. But the implications of that are depressing - Nazis who spin on a dime about which races are and are not master races have obviously not been infected by some fixed dogma.