Now playing Next USA Violence erupts after policeman avoids charges over black teenager's death 25/11/2014
Now playing Next USA No charges against police officer says grand jury in Ferguson shooting 25/11/2014
Now playing Next USA Missouri town waits anxiously for decision on police shooting of teenager 24/11/2014
Now playing Next Culture news Crashing onto the Paris exhibition scene: Hokusai's 'Great Wave' at Le Grand Palais 21/11/2014