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Lebanese citizens ride their scooter between burning tires that were set on fire by Sunni protesters, at one of the major roadways between Beirut and the capital's southern suburbs, a Hezbollah stronghold, to show their support with Sunni town of Arsal, in Beirut, Lebanon, Tuesday, March 18, 2014. Gunmen from Lebanon's militant Hezbollah group and local Shiite Muslim residents tightened their blockade of a Sunni town of Arsal near the Syrian border Tuesday, sparking concerns that thousands of Syrian refugees stranded in the area could be cut off from humanitarian aid. (AP Photo/Hussein Malla)

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