PoliticsNation with Al Sharpton 09/22/14

Authorities 'closing in' on alleged cop killer

Police say they’re closing in on Eric Frein, the man accused of ambushing state troopers in a deadly sniper attack - and they say it was an attack he had planned well in advance. Sarah Dallof, Jim Cavanaugh and Mark Potok join Rev. Al Sharpton for the lat ... more Duration: {{video.duration.momentjs}}