I remember, year before last (Before 9-11) I was talking to some Israeli students on some chat room, when a bunch of trolling Arab Students From Boston showed up in the chat and started threatening to kill every body. basically they told us that they had a closet full of AK47's and that they were, going to start hunting Jews and Jew supporters down and kill them. That sort of thing used to happen a lot on some of the Yahoo chats, but for some reason over the last few weeks of this sniper thing, that particular chat keeps coming back to me. Not that I think they were the snipers, but just as the general attitude of many Arab students in this country.
I think there has been a cell of Arab students in this country, that has been thinking about these kinds of shootings for a long time.