I would argue not.
Mein Kampf was written by Hitler himself, not some skinhead meth coke head looking to make an excuse why the Jooz are evil. There are more than enough writings of people who owned slaves to know why slavery existed in the States.
"Mein Kampf" is a historical document that, read in the right context, gives insight into Hitler's warped thinking.
On the other hand, I don't think the pamphlet of a holocaust denier should be added to the WWII curriculum to provide "balance".