Syrian refugees demonstrate against Syrian President Bashar al-Assad at a refugee camp in the Turkish border town of Boynuyogun in Hatay province June 30, 2011. Syrian troops shot dead 11 villagers on Wednesday, residents said, as authorities pressed on with a tank-led assault that has driven thousands of refugees across the northwest border with Turkey. REUTERS/Osman Orsal (TURKEY - Tags: POLITICS CIVIL UNREST)