President Barack Obama has used a memorial service for the victims of America's latest mass shooting to make another impassioned appeal to reform gun ownership laws.
"No other advanced nation endures this kind of violence. None," he declared, during a ceremony at the Washington Navy Yard on Sunday, where a contractor killed 12 people in a gun rampage last Monday.
He says Americans must raise their voices against the gun violence that has rattled the US several times during his time in office, saying it "falls upon us to make it different".
The president and first lady Michelle Obama also visited with the victims' families.
Obama says it has become clear that change will not come from politicians in Washington, who have been unable or unwilling to change US gun laws even when tragedy strikes the capital city.
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Instead, Obama says, change will have to come the only way it ever has - from people demanding action.
