Well, the nazi swastika isn't the proper religious symbol it is reversed.

On religion..officially the third reich was christian, but many of the members of the party wanted to return to the Norse religion of their ancestors(known today as asatru) except they would bastardize it, like many things, to seam like it said that the germanic people are the master race and everyone else were Untermensch(subhumans).

Its quite silly to claim to be christian and support eugenics as isn't the christian God supposed to be perfect, so why would he make something "subhuman"(sorry if my presumptions about the christian God are wrong...or dont fit with your particular branch of christianity!).

--peace