All candidates for high office are at risk and need security protection.   Just look at the history of political elections over the past few decades.   And those who are perceived as threatening by The Powers That Be are even more vulnerable.

I agree that putting out the meme that so-and-so is likely to be assassinated may make that more likely to happen, if only by way of putting the idea in the head of some nut case who had not yet chosen a target.   So, yeah, I, too, am bothered by prophecies about Obama (or Clinton or anyone) being assassinated, because prophecies can too easily become self-fulfilling.

That said, I think when there is a security lapse of the sort initially reported by the Ft Worth Star-Telegram it needs to be reported.   And I don't find the subsequent 'Calm-down,-it was no big deal" reports from TPTB all that reassuring.

G