I have my misgivings about Glen Greenwald. Sometimes he seems more like an activist than a reporter. However, this seems to fall within the bounds of investigative journalism.
This is not the first time I have heard of the FBI using these tactics. I am a huge fan of hunting down terrorists down. I believe we should put mad dogs down, but does poking a dog with a stick until he bares his teeth and then shooting him count as protecting us?
If the article is accurate then this practice needs to be stopped not just for reasons of justice and liberty but because it will piss off the people who will be the most likely to know of a threat. If they don’t trust the authorities they wont talk to them. This is not a new thought. It is a fundamental principle of law enforcement.