Luther was a notorious anti-semite. The German Christians who tried to reconcile Nazism with Christianity were Protestants. The country even after the annexation of Austria was two-thirds Protestant. Both Catholics and Protestants were complicit in the Holocaust, but enough of this Black Legend Stuff.
None of that has anything to do with America and Americans, that is some old European stuff, Americans never thought much of those people and all their brutality and rivalries and just overall weirdness.