Belfast in Northern Ireland saw a third night of violence on Wednesday (July 15) as rioters attacked police officers with gasoline bombs.
The trouble began on Monday (July 13) as nationalists from a predominantly Roman Catholic area of Belfast tried to disrupt an annual march by the Protestant Orange Order.
The Orange Order is made up of Protestants who want Northern Ireland to remain a British province.
Nationalists, whose support is bedded in the minority Roman Catholic community, would like to see a united Ireland.
The violence has been condemned by politicians from Sinn Fein, the dominant party representing nationalists.