A Palestinian man dressed in an Israeli soldier's uniform is seen inside a prison in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS SOCIETY) 

Palestinians visit prison cells in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY) 

Hamas women take part in a rally next to a prison in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS CIVIL UNREST) 

A Palestinian girl looks at a prison in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS SOCIETY TPX IMAGES OF THE DAY) 

A Hamas women's rally is seen near a Palestinian dressed in a prisoner's uniform at a prison in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS CIVIL UNREST) 

A Palestinian man dressed as late Hamas leader sheikh Ahmed Yassin is seen inside a prison in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS SOCIETY) 

A Palestinian boy visits a prison in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS SOCIETY) 

Palestinians visit prison cells in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS SOCIETY) 

A Palestinian youth visits prison cells in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS SOCIETY) 

Drawings are seen in a prison cell in Gaza City that had been used by Israeli security services to keep Palestinian prisoners during Israel's occupation of Gaza Strip April 11, 2013. A Hamas prisoners association has turned the place into an exhibition which Palestinian residents of Gaza can tour. REUTERS/Suhaib Salem (GAZA - Tags: POLITICS SOCIETY)