Large protests began two weeks ago in Syria's largest Palestinian refugee camp, Yarmouk, an enclave of nearly 150,000 within Damascus. Security forces fired on protesters, killing at least five and setting off a cycle of funerals, demonstrations and further crackdowns—which in recent days has escalated to shelling of the camp. Similar violence has hit other Palestinian camps in Syria. More than two-thirds of the 17,500 refugees in the southern city of Daraa fled an attack last month, the UN reported. While many have returned, the camp is under siege, with food and medicine in short supply. Palestinian activists provided AP with the names of 198 refugees killed since the Syrian uprising began in March 2011—67 in July alone. The Palestinian Authority places the number of Palestinians killed in Syria since the start of the uprising as high as 300.