More on the Ahmedinejad Holocaust Denial

Iran News - Top Iranian cleric defends Holocaust remarks

"After World War II the Jews and Zionists spread a false rumour that Hitler, Austria and Germany had burned more than six mln Jews in the furnaces," said Meshkini, who heads the body that selects and supervises Iran's supreme leader.

So, my question is ... how exactly do we stop such unbelievable misinfornation?

Then again, when the Protocols are so popular in Iran, is it surprising? Link to Wikipedia article