Sudan’s brutal civil war escalates as paramilitary forces go on killing rampage

Sudan's civil war has entered a new and horrific phase as paramilitary Rapid Support Forces have gone on a killing rampage after taking over the key city of El Fasher in western Darfur. Hundreds of thousands have fled after witnessing mass executions and brutal violence. Nick Schifrin reports. A warning, images and accounts in this story are disturbing.