It is absurd to deny the Holocaust. Where does one even begin in describing how useless and stupid it is? All the recorded evidence, all the eye witness testimony, it boggles the mind that anyone could believe that the whole horror was faked.
Yet there are people who do. Some are easy to dismiss. Red necks, ignorant Eurotrash, much of the Arab world and other such groups with no knowledge of history and a willingness to believe anything as long as it's presented the right way. The lack of belief in these people is easy to understand. They're stupid and a trip to Auschwitz would cure more of them of their misconceptions.
But then there are the others like David Irving who have made it their life's work to "prove" the Holocaust didn't happen. Unlike the hicks from the sticks, they are well dressed, educated and have an answer to every challenge. They can show you how all the evidence has been faked. They are willing to stand up to any survivor and call him a liar.
Now, as long as we have organization such as the Simon Weisenthal Centre and scholars like Deborah Lipstadt, these monsters have been kept in their place. But what has really made the difference in battling Holocaust deniers until now has been the living testimony of the survivors. It is one thing to stand in a court room and argue over the authenticity of a photo or grainy piece of video. It is quite another to argue with Bubbie Greenberg's defiant "Vot are you talking about? I vas there!"
The problem is that the number of survivors is dwindling with time. Age, the enemy of every mortal person, is taking its toll and within a few decades there will be no one left who can state "I say them do this! I was there!" And and that point the dynamic will change entirely.
No longer intimidated by eye witness testimony, deniers will be able to move the battle away from the personal and entirely into the academic/legal arena. Refutations of Holocaust deniers will require scholarship and high level of proof of evidence. Want to see the future of the Holocaust denial movement? Look at Iran's obsession with supporting these scum. In the Muslim word, the burden of proof isn't on the deniers. It's on the people who speak the truth. And they have the money they need to fund their supporters in the Western world.
(As a side point, the next time you see someone describe the president of the so-called Palestinian Authority as Dr. Mahmood Abbas, remember that his PhD thesis was a piece proving the Holocaust didn't happen and that we made up the whole thing to get the Europeans to give us Israel)
Within a few decades we will no doubt see a new trend in skepticism. It won't be consider idiocy to deny the Holocaust. It will be called skepticism. It will be presented as a search for the truth. We will be told "Yes, some Jews died, of course, no one would say not a single Jew died but really, the evidence isn't all these, etc. etc.). People who "believe" that six million Jews died in the Holocaust will be labelled as naive and not worthy of discussing the topic with.
For some, this is a pessimistic and cynical outlook. For a believing Jew, this is just history inexorably repeating itself. After all, it is quite obvious to us that God gave us His Torah at Har Sinai, that David HaMelech ruled over Israel and that his son Shlomo HaMelech built our first Temple in which the Shechina resided.
But not to the skeptics...