The Kennedys have an imperial sense of entitlement, similar to the Bonapartes in France. Ordinary rules don't apply to them. They're aristocracy.
I found this quote on the net and found it interesting.
" Do we operate under a system of equal justice under law?
Or is there one system for the average citizen and another for the high and mighty? "
~ Senator Ted Kennedy, 1973
Apt comparison - BTW - are there any surviving Bonapartes? There must be, yet one doesn't hear of them. Maybe at some point it was prudent to change one's name to something else.