I think the notion that the film started out as a debunking and finished as a tirade against racism fits the limited observations we are able to make.

The downtrodden tend to look at these situations as if they were more polarized than a dispassionate evaluation suggests. In this mindset only two possible categories exist: those who are activity opposed to the oppression, and those who support it. People who are on the sidelines or involuntarily involved are assumed to be complicit since they didn't do anything to stop the oppression.

I won't belabor what's wrong with that way of thinking. But it may help to explain the filmmaker's goal. If he is indeed Jewish, he would certainly have something to say about Nazi Germany and the KKK. NASA's elevation of von Braun and other Peenemunde scientists to positions of authority within NASA would be interpreted in the bifurcational mindset as approval of and possibly even complicity with Nazi Germany's anti-Semitic agenda.

Similarly, just the presence of KKK members in the space program could be interpreted by that mindset to be a form of acceptance and vicarious approval of the anti-Semitic KKK agenda. Those with the "with me or else against me" bias argue that NASA (and society by extension) should take pains to weed out such types, and if they don't then they're just contributing to the problem and therefore just as guilty as those who are actively anti-Semitic. Even if it were a few isolated individuals whose KKK influence never extended beyond the tiny sphere of their individual work assignments, the least bit of tolerance is interpreted by the brittle downtrodden as agreement.

But if you've got some pipe brazer working for you, and he does his job well and leaves his hood and cape at home, you can't just fire him. To expect NASA, or any other employer, to conduct such witch-hunts thoroughly and regularly is antithetical to American society. Obviously overt racism on the job shouldn't be tolerated, but that's a different concept. Just because some of your employees might have white hoods in the trunks of their cars doesn't mean you condone who they are or what they do when you're not working for them.

To argue that NASA was sympathetic to Nazi Germany's principles and practices is ludicrous. To argue that it institutionalized racism (any more than anyone did in the 1960s anyway) is similarly ludicrous.