Lee Harvey Oswald did the same thing after Kennedy was shot..quite equanimical that he hadn't done it. Anders Behring Breivik at least admitted shooting 77 people,yet not one shred of remorse..yet.
I don't recall reading anything about LHO or ABB that suggests that they, in any way, reached out to other people. I'm not in a position to say whether they shunned or were shunned by others but I do have a sense of both of them having a need to be important in the eyes of the world, allbeit for a warped act. Jeremy, it seems, had no problem in drawing others to him and was at no time autonomous. What link are you attempting to show?