A pedestrian walks by a banner that reads ' No to cartels, Yes to population-linked caps for new taxi licences' as striking taxi drivers march with their families at the northern port city of ... more 
A pedestrian walks by a banner that reads ' No to cartels, Yes to population-linked caps for new taxi licences' as striking taxi drivers march with their families at the northern port city of Thessaloniki on Monday Aug. 1, 2011. Striking Greek taxi owners stepped up protests Monday, blockading highways and a busy regional airport, after fresh negotiations with the government on new licensing laws collapsed. (AP Photo/Giorgos Nissiotis) less 
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Associated Press | Photo By Giorgos Nissiotis
Mon, Aug 1, 2011 10:44 AM EDT