FILE - In this Jan. 27, 2012 file photo, New York City Police Commissioner Raymond Kelly speaks to reporters during a news conference in New York. Kelly says the NYPD will be doubling t

 

              FILE - In this Jan. 27, 2012 file photo, New York City Police Commissioner Raymond Kelly speaks to reporters during a news conference in New York. Kelly says the NYPD will be doubling t
FILE - In this Jan. 27, 2012 file photo, New York City Police Commissioner Raymond Kelly speaks to reporters during a news conference in New York. Kelly says the NYPD will be doubling the size of its gang unit to combat a surge in social media-fueled violence. The reinforcements will focus largely on loosely affiliated groups of teens who trade dares and insults on Facebook. (AP Photo/Mary Altaffer, File)