I think the threats of an Obama assassination are being drastically overblown by people who have watched too much 24 (though this is suspicious).

Those particularly concerned that the Clintons are gonna have Obama offed seem to be reading from the “Clinton Bodycount” chain e-mails that have been making rounds for over a decade. Snopes has a history of the e-mails and a thorough debunking of their contents.

See also: Christopher Hayes’s article on right wing chain e-mails.