Students holding Greek national flags march as soldiers from the 71st Airborne Brigade guard the route of a military and student parade commemorating Greece's entry in WW II in the northern Greek city of Thessaloniki, Sunday, Oct. 28, 2012. Authorities took the unprecedented step of deploying troops alongside police to prevent the sorts of incidents that led to the cancellation of last year's parade after the route was overrun by anti-government protesters. (AP Photo/Nikolas Giakoumidis)