And that's a good thing.
First step is admitting you have a problem (something RL seems incapable of doing, right now), and the second is doing something about it. Showing those citizens the camps, and having them help dig the graves is one reason why modern Western Germany's been so hellbent on avoiding repeating that shit. It's also why we should be including the same in the modern curriculum - emphasize the negative aspects of our history, and those of others, and take them to sites related to it. We have several Holocaust museums in the US, and it's important for people to know where paths of hatred lead to.