This is an unanswerable hypothetical question, but you might want to check out /u/commiespaceinvader 's Monday Methods post which does detail how the Rosenstraße protests in Berlin were able to stop deportations. The whole thread is worth reading because it explores the dynamics of protest and participation while detailing how the Third Reich cannot be simply reduced to a binary between an all-powerful state and a subject population. Protests under the dictatorship often intertwined various personal motives with ethical concerns that makes it hard to view it simply as resistance to evil.