@John 104 - The problem is any relatively high ranking German would have been caught up in the Nazi policies and stupidities. Von Braun, like many others, had to make a Faustian bargain with the regime. Also, protesting the Nazi regime was good way to end up in a concentration camp or dead. It is too easy to criticize when one is not likely to face a situation remotely similar.
Von Braun was arrested by the Gestapo because he commented at one point that his interest was manned space flight not ballistic missiles.