Four gunmen on two motorcycles shot dead three Express TV media workers and injured a fourth in the North Nazimabad suburb of Karachi on January 17 – http://www.cpj.org/2014/01/three-media-workers-killed-in-attack-on-express-tv.php. This was the third attack on the media group’s employees in six months. In August, terrorists opened fire on their office in Karachi, injuring two workers, and…