> only one group ran a Dachau

is a strange example since it was just a complex of work camps, with the Japanese, British and so on having far worse than that.

> Because there are fewer people waving hammer-and-sickle flags around than there are spray-painting swastikas on synagogues and Raising Questions about whether the Holocaust was so bad after all.

The hyperbole weakens the point / or where are you to see constant Nazis? In the US, Mexico and Germany I regularly see hammer and sickle flags, t-shirts and graffiti. In Mexico city right now, there are huge banners with Stalin and Lenin, besides Marx and Engels, draped across traffic lights and streets all over the center, while it's been almost 10 years since the only big nazi protest I'm aware of (Charlottesville)