athens greek police clash hood youths athens friday thousands march mark bloody 1973 student uprise help topple military junta rule country 10,000 people march peacefully embassy unite state greeks accuse support seven-year military dictatorship 5,000 police deploy streets central athens tail-end demonstration hood youths hurl stone petrol bomb police exarchia district central athens often set clash police use teargas disperse early friday greeks lay flower athens polytechnic university honor kill revolt junta collapse less year late annual protest often become focal point protest government policies austerity measure mandate country international lenders exchange bailout fund crisis break 2010 leave hundreds thousands people unemployed protesters hold banners read live freely pensioner fire seven years belt-tightening greeks hope emerge lenders supervision august 2018 country third international bailout expire many accuse political elite drive country bankruptcy greeks march mark 1973 student revolt junta clash break