One of syndicated TV’s longest running shows, “Cops,” and basic cable’s highest rated show, “Live P.D.,” were abruptly canceled this week, along with a third show, “Body Cams.” All three were police reality TV, a genre that critics say encourages aggressive policing for entertainment purposes. To discuss, Emily was joined by former CNN White House Correspondent Dan Lothian, Callie Crossley of WGBH News, Joanna Weiss of Northeastern University's Experience Magazine, and Adam Reilly of WGBH News.