What evidence is there to prove that Adolf Hitler knew about the death camps?

[cracker]

The generals reponsible for individual areas decided to do the killing. Hitler was not an anti-semite according to his world war one colleagues.

All he wanted was a new germany - without the profiteers, malingerers and communists. He - like all germans believed that the Jew was the communist spreaders. I find it hard to believe that a gentle looking, small man like Adolf Hitler can be blamed for the death camps.
Rather it was the fault of individual generals. Did Hitler even know about them???
There have been A LOT of lies published about him. For example I was always led to believe that at the 1936 Olympics when Jesse Owens won a race, that Hitler refused to shake his hand. NOT TRUE. Jesse Owens himself wrote that Hitler was waving and smiling at him to congratulate his victory. When the ceremony came, hitler had left because it was dark.
So, I just cant believe all the bile that our media feeds us about hitler, without questioning it.

[Anna P]

Wow, you really need to learn how to read history and develop some critical reasoning skills. Not ALL Germans believed Jews were communists--in fact many were very successful capitalists. If you think Hitler was gentle looking, you are the one with the problems. He was at the meeting where the Final Solution was developed. 'Nuff said, troll.

[vambo number five]

I expect he spent his time playing with fluffy kittens and painting pictures of lovely rainbows, eh?