I would perhaps adapt it like this: "Dear America: You are waking up, as Germany once did, to the awareness that 1/3 of your people would kill another 1/3, while 1/3 watches." - Anonymous

Herzog never said this, as enticing as it is to believe it. While I believe in the sentiment, we in the opposition have to be careful about pushing 'fake news'. www.politifact.com/factchecks/2...

But are they? Too little too late?