New poll shows striking change in Americans' views on political violence

A new PBS News/NPR/Marist poll shows that nearly a third of Americans believe that political violence may be necessary to set the country on track. Cynthia Miller-Idriss, a professor who studies polarization and extremism, said the rising support for political violence is translating into real acts and is deeply alarming. Geoff Bennett discussed more with NPR's Domenico Montanaro.