Saying this as a person that typically doesn't care at all about these things: you can't possibly compare Hitler to Bin Laden. The first is definitely worse - and I am sorry for people who lost family or friends in 9/11. But he was way worse. The guy started a world war, he literally killed dozens of millions of civilians and made life shi*ier for everyone on this planet. What he and his crew did to people, to society, and everything else - books have been written so that we hopefully, as humanity, won't repeat again.