The idiocy of the former group seems greater to me, because there the horrors have happened geographically closer (should switch them more to "near" mode), and they had enough time to learn about what happened (enough evidence). EDIT: On the other hand, the former group had a realistic chance to become the new leaders, while the latter praised someone who would kill every single one of them.

But otherwise, both are examples of: "yeah, seems that millions have died horribly, but our beliefs that our role models are the good guys remain unshaken."