Why is it acceptable for these innocent people to die, especially in service of their country, but all we can do to the perpetrators (until they actually perform the deed---even though we KNOW they are leanting towards something like this) is take their passport and ask their parents to keep an eye on them?

Wouldn't it be more acceptable for some of these "questionable" people to have their "civil rights" violated, than to wait until they kill innocent GOOD people?