You will just have to take the FBI at their word that it's for your own good, then. It's not clear from that Wired article that they stopped anybody who actuall

You will just have to take the FBI at their word that it's for your own good, then. It's not clear from that Wired article that they stopped anybody who actually abused children. What they have obviously accomplished, however, is a way to decloak at least some users of Tor and probably dissuaded many more people from using it for secure anonymous communication.