Update | Ferguson burns after policeman not charged in unarmed black teen's shooting
Demonstrations across the country against grand jury decision over Brown shooting
Furious protesters took to the streets in cities across the United States after a grand jury cleared a white police officer in the fatal shooting of an unarmed black teenager, highlighting long-standing racial tensions across America.
The decision sparked a night of violent and racially charged rioting in the St Louis area of Ferguson, Missouri, where 18-year-old Michael Brown was shot dead by police officer Darren Wilson on August 9.
Watch: Riots across US after jury decides not to charge policeman who shot black teen
But angry protests were also staged on Monday night in New York, Chicago, Seattle, Los Angeles, Oakland and Washington DC, with thousands marching and chanting "Hands Up! Don't Shoot", the slogan that has become a rallying cry in protests over police killings.
The rioting came despite desperate calls for calm from officials ranging from Missouri Governor Jay Nixon to US President Barack Obama, who also admitted the nation had work to do on race relations.
"We need to recognise that the situation in Ferguson speaks to broader challenges that we still face as a nation," the president said. "In too many parts of this country a deep distrust exists between police and communities of colour."
About a dozen buildings in Ferguson burned overnight and police fired tear gas and flash-bang canisters at protesters, said St Louis County police chief Jon Belmar. Sixty-one people were arrested.