I think that, in a way, the developing immigrant crisis (look at the problems at Cologne on New Year's) is going to be a good thing for Germany, forcing them to determine what parts of their heritage are worth standing up for after all. The Greek crisis was also an example of Germany standing up for themselves; I think that, if you ask the Germans, they've made as much restitution for the Nazi period as it's meaningful to make (look up the details, they're pretty formidable), and at this point improvident foreigners looking for handouts and talking about Hitler are just engaged in bullying.
In the long run, I expect Germany to survive, but I'm not making the same bet on the US. I'm planning on moving from the US to Ireland at some point; I don't really want to be here, or to make my children be here, for the chaos almost certain to ensue 40-50 years from now. (Or 10-20 years from now, if we end up with President The Donald and he keeps his campaign promises.)