From Paris to Boston, Terrorists Were Already Known to Authorities

Gallagher, Royer
http://theintercept.com/2015/11/18/terrorists-were-already-known-to-authorities/

Publisher:  The Intercept
Date Written:  18/11/2015
Year Published:  2015  
Resource Type:  Article
Cx Number:  CX18331

Whenever a terrorist attack occurs, it never takes long for politicians to begin calling for more surveillance powers. Officials in the United Kingdom and the United States have been among those arguing that more surveillance of Internet communications is necessary to prevent further atrocities.