US protests after police shooting of black man in Louisiana

Protests have taken place in the US state of Louisiana after a video emerged appearing to show two white police officers holding down and shooting dead a black man.

It happened in the state capital, Baton Rouge, on Tuesday after reports of a man threatening people with a gun outside a shop.

A post-mortem examination showed the victim, Alton Sterling, 37, died of gunshot wounds to the chest and back.