Hrrm...

If you really have to wonder why this may be a huge problem, please please please pick up a history book or visit a holocaust museum or ask a survivor.  Anybody who tries to wipe out an entire group of people simply because of their ethnicity is seriously mentally ill and if they have political power, well, let me point you to the concentration camps.  From digital spy:

Oliver Stone has sparked controversy by claiming that Hitler is an "easy scapegoat".

The Wall Street 2 director made the comments while promoting his new documentary series, The Daily Telegraphreports.

The Secret History Of America, which Stone claims will put historical figures such as Hitler and Stalin "in context", aims to discover hidden facts about the United States.

In a trailer for the show, Stone says: "You cannot approach history unless you have empathy for the person you may hate."

Meanwhile, at a press conference at the Television Critics Association he explained: "We can't judge people as only 'bad' or 'good'. Hitler is an easy scapegoat throughout history and it's been used cheaply. He's the product of a series of actions. It's cause and effect."

The show's lead writer Professor Peter Kuznick insisted that Hitler will not be portrayed positively in the series, but said that he will be discussed in the context of the time instead of as "somebody who appeared out of nowhere".

Stone, who revealed that he did not want to make an "easy" history programme, added that he expects the series to be criticised.