By this standard, all German politicians with more drawing power than John McCain...er, all German politicians, natch, are, in fact, incipient Hitlers.
Here's a tip for liberals: If your candidate is going to stage enormous rallies in front of tens of thousands of chanting Germans (with monuments to Prussian military might in the background) in the middle of his Presidential campaign, it isn't the GOP's fault if the footage comes out looking a little like Hitler at Nuremberg.
To be fair to Ross Douthat, I too get nervous whenever I see large groups of white people chanting things. Like at Queen concerts, or megachurches.
UPDATE: Blame the Jooooooos!