They DON'T all look exactly alike. Nor do these, these, these, or http://www.fbi.gov/pressrel/penttbom/ua175/175.htm>these.

Yet if one racks one's brain, and maybe squints a little, a certain, shall we say, pattern of appearance does seem to present itself.

I'm not seeing a lot of Irishmen here.

Any sensible security precautions are going to pay special attention to those of Middle Eastern extraction. To say that this is going to sweep up a lot of innocent people is an understatement, to say the least. But playing the Politically Correct game and going out of the way to check out all the innocent people who DON'T look Middle Eastern just to make the goddam ACLU happy is wasting valuable time and is going to get someone killed.