Here's a question

A little intro first: I happen to believe in reincarnation. I cannot prove it to be true, obviously, but so far no one out there has disproved it and until someone does, I will continue to believe it to be the way Life works. 

So, suppose Hitler reincarnated as a sweet boy in a different part of the world, let's say in sunny California. Suppose he is a cute and highly intelligent 3 year old that will be celebrating his fourth birthday next month.

How would you feel about that child knowing who he had been last time round?