To catch a terrorist: The FBI hunts for the enemy within

Summary: 
"Enhanced surveillance and wiretapping powers initially passed under the Patriot Act can now be used against citizens who are merely “suspected of associating with radical activists.” So, for example, an NGO whose offices were raided last year by the FBI in connection with a “domestic terrorism” investigation turned out to be working on a humanitarian mission to Palestine, where, unbeknownst to the activists, they’d been accompanied by an undercover FBI agent."
Media Outlet: 
Harper's