Donald Trump has threatened to deploy the military to quell unrest in cities across America - describing the problem as "domestic terror".
The US president addressed the nation from the White House, as police used stun grenades and tear gas to clear surrounding streets.
It was the sixth day of disturbances sparked by the death of an unarmed black man - George Floyd - in police custody in Minneapolis.
A medical examiner has classified his death, in Minneapolis, as a homicide.
The US president says he's taking radical action.
"I am obliging all available federal resources, civilian and military, to stop the rioting and looting, to end the destruction and arson, and protect the rights of law abiding Americans."
