It's ok man, a lot of us feel the same way. It pisses everyone off. Everyone needs to concentrate their anger on one guy, Usama Bin Laden.
I do worry about those that area in my area that are of the same nationality. I know about 6 in my PT classes, and I worry they are going to be the target of some of the anger. As long as we do not blame everyone for it, I believe it is justifiable.
This is a wake up call for increased security in our nation, and other nations as well.