You probably have to be unoriginal to think all the solutions to the problems of today are to be found in yesterday's failed policies. We had a war about the superiority of racial purity, it was called WW2, the racially impure nations won over the racially pure nations, end of story.

And here were are, exactly 80 years later, wondering again if racial purity is a good thing. We know the answer, but some people need convincing every third generation.