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She is a trustee of the Greek Special Olympics and a director of “ El Pida ” an organization involved in the fight against cancer in children . Some of the events , such as a U.S. - financed tree-planting ceremony here in Ramallah that Abbas attended last week , have resembled Fatah rallies , with participants wearing the trademark black-and-white kaffiyehs emblazoned with the party logo , walls plastered with Fatah candidates ’ posters , and banks of TV cameras invited to record the event . For example , users ' visibility ( including " anonymous " and " hidden " ) may be displayed to the moderator or administrator , subject to a conferencing system 's local policies .