Fighting the war on terror

My suggestion for one of the ways in which the government should fight the war on terror: instead of hiring informants to pretend to be Al Qaeda members who infiltrate discontented groups of Muslim youth and suggest that they take oaths of allegiance to Al Qaeda and consider blowing up the Sears Tower, why don't we hire informants who infiltrate discontented groups of Muslim youth and organize neighborhood cleanup campaigns, after-school basketball leagues, and discussion groups analyzing ways in which the Koran is consistent with the Constitution of the United States?

At the least, why don't we hire informants who are content to listen rather than foment plots? Any time the informant is the instigator, the case against the proto-terrorists is deeply, deeply compromised. Maybe these guys were going to be terrorists on their own; the coverage I've heard suggested that they were easily led toward that point. It's not our government's job to persuade people to conspire against us; it's our government's job to notice if people are conspiring on their own and stop them. There's an argument to be made that it's also our government's job -- as it is the job of ordinary public-spirited citizens in general -- to persuade people that improving their lot by peaceful means is better than attempting to improve their lot by making other people's lot worse (by definition, blowing up buildings containing people will make those people's lot worse, and blowing up buildings not containing people will still make a lot of people's lot worse. I am opposed to blowing up buildings in general, okay?).