‘When is enough going to be enough?’ asks Dayton mayor

Nine people were killed and 27 were wounded in a mass shooting in the downtown entertainment district of Dayton, Ohio. The police patrolling the area fatally shot the gunman within a minute of the attack.The shooting took place less than 24 hours after the killing in El Paso, Texas, of at least 20 people. Nan Whaley, the mayor of Dayton, joins Hari Sreenivasan via Skype.