system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Holocaust deniers

I don't understand how people can deny that the Holocaust ever happened. Don't we have mountains of photo and video evidence?
gpt
We have **overwhelming** evidence that the Holocaust happened.  The nazis, if they did anything right, kept amazing records.  Unlike, say, the Armenian genocide where all the records were burned, locked away, or otherwise denied, we can look at the nazi registers and see that X Jew left Y town on Z date, and then went to Concentration Camp A and died on date B.  We have photos from Auschwitz, Dachau, etc showing mountains of sheared hair, eyeglasses, bones, etc.  We have witness testimonies that survive until today.  We have the Nuremberg trial transcripts.  Unlike the Armenian genocide, we have very exact numbers on who died, where and when.  Nazis loved records.

Conspiracy theorists tend to be semi-intelligent people who want to be perceived as more intelligent than they are, so they cling to bogus theories to feel smarter than the rest of the people, who they view as idiots that believe everything they are told.  Holocaust deniers are the same; they feel clever having "figured out" a massive government conspiracy.  They get so hooked on the feeling of intellectual superiority that it creates a sort of dissociation from reality wherein all evidence to the contrary of their theory gets interpreted as a government lie and even the slightest shred of evidence that it didn't happen becomes a diamond in the rough that only they are "smart enough" to see.