A policeman stands guard as Tunisian demonstrators attend a protest outside Tunisia's Bardo National Museum on March 24, 2015 in Tunis, condemning the attack on the tourist site six days earlier which killed 21 people. Tunisia's national museum was forced to delay its planned reopening to the public over lingering security concerns, however a ceremonial opening, featuring a concert and tribute to the victims, is still planned to go ahead. AFP PHOTO /FADEL SENNA (Photo credit should read FADEL SENNA/AFP/Getty Images)
