"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...

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."

The first of Genie's paragraphs is self evidently true. The second seems very unlikely indeed to me. "I feel like assassinating someone - now whom should I pick. Let's have a look around the Internet for suggestions..."