Shooting with Mursi

Olisarali Olibui, a member of one of Africa's most isolated tribes carries a Kalashnikov in one hand and a camera in the other, with which he chronicles the struggle of his tribe to protect their land and way of life.

The Mursi are an Ethiopian tribe of fewer than nine thousand people, a nomadic group of pastoralists who live in an area of the Omo valley the size of Wales.