Take a good look at the American History.
okay. blacks were originally brought in as slaves. they have been suppressed since they first set foot on american soil. even after they got their "rights", individuals still found a way to get at them. formally, black people are considered equal, but i doubt we're there yet, even in 2008. racism is a big part of the modern world.
since the dawn of america, there has never been a black president. jesse jackson became a candidate but never president. so your comparison is completely off base. there has never been a black president so one has never been shot. there has been several white presidents, and they have been shot. what's your point?
humans don't like change, and a black president is a big change. there will be a lot of people against that. present some proof to your arguments. give me some insight more than "look at american history", that's not an argument and it doesn't prove anything, other than that you are bad at debating lol.