A man throws a javelin style stick at riot police during a demonstration where 17,000 cab drivers, students, and futbol fans marched in the northern port of Thessaloniki, Greece Sept 10, 2011. Marchers were protesting against austerity measures just before Prime Minister George Papandreou spoke. Police were fired on by flare guns sticks and stones and even gas bombs, according to police representatives. Photo Ken Cedeno