US police shootings of black men ‘should concern all’ – Obama

US President Barack Obama has said all Americans should be concerned about the frequent police killings of black men.

His comments, as he arrived in Poland for a Nato summit, came after two more black men died in such incidents.

Philando Castile was shot dead during a traffic stop in Minnesota on Wednesday, while Alton Sterling was shot dead by police in Louisiana a day before.

Mr Obama said the US must say “we’re better than this”, and that its importance went beyond race.

“This is not just a black issue. It’s not just a Hispanic issue. This is an American issue that we should all care about,” he said.  “All fair-minded people should be concerned.”