Communists scream that the US was never a free country because of slavery and Nazis insist that USA could only have blacks because of slavery, but Commies and Fascists are completely unable to explain why the US could have freedom and diversity from 1865 to 2001.
@dcjogger Simple. The diversity was at manageable levels.
We're now heading for an exponential growth of the non-white/non founding population.
It's not rocket science.