Vassilis Papageorgopoulos, former Thessaloniki mayor, is escorted to prison in Thessaloniki on February, 27, 2013

Former Mayor of the Greek northern port city of Thessaloniki, Vassilis Papageorgopoulos is escorted to prison in Thessaloniki on February, 27, 2013. Greece has finally begun to crack down on corrupt politicians but anti-graft experts say much remains to be done to end decades of impunity.