Palestinian supporters of Hamas protest during a demonstration against the underground barrier Egypt is building along its border with the Gaza Strip, in Gaza City, Friday, Dec. 25, 2009. Egypt is installing a series of metal sheets deep along the Gaza border to block tunnels used to smuggle weapons into the Palestinian territory. The smuggling has continued after Israel's offensive in Gaza last winter. Egypt is under fire from Arab and Muslim groups for cooperating with Israel in a two-year blockade of Gaza. Photo by Wissam Nassar