Politicians , police and community leaders met to discuss ways to end the violence . Officers were also pelted with ball bearings , fireworks and masonry , police said . Police say 52 officers have been injured in weeks of violence . Protesters attack officers with petrol bombs , fireworks and bricks , police say . Protests have rocked parts of Northern Ireland since a vote on the union flag .
Politicians , police and community leaders met to discuss ways to end the violence . Police say 52 officers have been injured in weeks of violence . Protesters attack officers with petrol bombs , fireworks and bricks , police say . Protests have rocked parts of Northern Ireland since a vote on the union flag .