Why do people still believe in the Holocaust?

Can someone please explain to me why everyone's expected to agree with the official story about 6 million Jews being killed under the Third Reich?  I mean, in many countries, it's criminal to even *question* the idea that something might be wrong with that claim.  And you basically get blacklisted everywhere for doubting it, being labled as a denier.

I've done some research on this, and there's actually a pretty solid case that there was no so-called "Holocaust".  One that I agree with, in fact.  Here's an example of an excellent debunking:

http://www.ihr.org/books/rassinier/debunking.shtml

So, with a case that solid, why is it such a big deal?  Why do people believe that there was a Holocaust?

Darfur was ignored because it's just more TNB, Typical Nigger Behavior.  The savages behave the same way in Darfur, in Nigeria, in South Africa, in Haiti, in Detroit.  It's in their blood.  They aren't human, so why pay attention to their monkey antics?