It is positively mind-blowing to watch this crude cartoon in the context of the demographic invasion going on in Europe right now :
At the 5minute 38seconds mark the narrator actually says : "For instance: there is a difference of approximately fifty cubic centimeters in the size of the brain of the average American negro and the brain of the average American white."
He then goes on to helpfully add : "And the largest brain on record was that of an imbecile."
I bet these troublemakers would have been a lot more careful if they had known that their evildoing would be scrutinized on billions of screens with instantaneous access to unlimited information just a few generations into the future.
Perhaps they thought that their final solution to the European problem would have been remedied by then.