Let It Not Be 1968
I think this is a residual, subconscious fear that a good number of Americans have when thinking about an Obama Presidency. It's a by-product of assassinations past as well as the fact that he's an African-American. However, I guess this guy in particular also talked about shooting Bush, so there's just a wackadoo element out there. I do think our Secret Service is actually pretty disciplined and takes these threats extremely seriously, and I'm confident they'll continue to do their job well.