I have never thought about this but, this explains A LOT!
Is Your Boss a Psychopath?
Let me shorten it for you...
Psychopaths lack empathy (feeling for others)... They can be violent or non-violent. It seems that the non-violent type are the ones who slime their way up the corporate (and governmental) ladder.
Connect the dots. Note my previous post and think about the leaders of all the great Communist/Socialist governments that has ever existed.