Trump Turns Attention To MS-13 In State Of The Union

In his State of the Union address Tuesday night, President Trump talked about gang violence and introduced the parents of two teenage girls killed by MS-13 gang members.

Here & Now's Jeremy Hobson speaks with MS-13 specialist David Pyrooz (@dpyrooz), a criminologist and assistant professor of sociology at the University of Colorado Boulder, about the gang and the extent of its activity in the U.S.