Police fired tear gas at stone-throwing protesters during clashes over labor rights in the phosphate-rich Tunisian town of Mdhila, Gafsa province, on March 21.According to the Interior Ministry a group of protesters waited until security forces had dispersed before setting fire to a local police station.Mdhila has seen a wave of unrest since phosphate production resumed earlier this month. Mining operations were halted in Mdhila and various other cities in the south following large-scale protests in January. The phosphate mining region is one of the poorer parts of the country with high unemployment among young people, reported Reuters. Credit: Capsa FM via Storyful