Yes, I have some imput.
Here is another totally different slant on it: remember that we are evolved social primates used to living in small groups. Let us say we use a common ideology to enable us to identify with a society or nation which is almost infinitively larger than the little groups we evolved in. So, here is what happens when that ideological bond we have in common with others divides and breaks down: the leaders (that is, the Alpha males) no longer regard their nation or society as being their instinctive group. So, they descend back to the group and conceptualize their family--that is, the wife, children, perhaps the mistress, friends and relatives---as his group. So, it is they who he guards, whose welfare he protects and takes care of. This is what "corruption" is. See:
the Atheistic Science Institute - home page
charles