I believe we're looking at a gross exagerration when it comes to the Holocaust. The reasons are so many and so varied from everything pertaining to post-war Zionist incentives to warp the truth to facts that refuse to show a Holocaust to the tune of six million people logistically feasible or likley. The sheer fuel consumption it would take to burn six million bodies is vast. Seeing as there was a substantial fuel shortage during the war for all involved the Nazi's simply wouldn't have even had access to that amount of fuel to do it, especially in the time frame. There were no doubt some systematic killings of the Jews taking place during WWII. During WWII there were systematic killings of a lot of things.
But six million people? Nah, no way. It doesn't add up, whatsoever. Not only that but there has been an active Jewish campaign to make Nazi atrocities synonymous with Jewish suffering. The gypsies got it worse than the Jews did but we never hear about their suffering.
From my own personal research on this topic I have seen no real evidence to show that The Final Solution ever left the drawing board.
We can throw all sorts of things into the mix like typhus epidemics, the difficulty in handling Zyklon B, the fact that there wasn't even six million Jews living in the vicinity of the camps. The fact that you can't burn bodies in pits due to lack of oxygen anyway and that crematorium ovens at maximum efficency would of only been able to kill maybe 500,000 people in the time that this extermination was taking place, yet a crematorium oven can, at a stretch, only run 50% of the time halving that number again.
Six million deaths is totally false. I'd be surprised if it went over a million and they were not gassed. End of.