Description:Clashes in the streets of Athens between hooded youths and riot police continued into the night on Thursday, even reaching the interior of a subway station. The street battles erupted during an annual demonstration in honor of the 38th anniversary of a student uprising at the Athens Polytechnic University in 1973. The march often becomes a focal point for anti-government protesters. Hooded youths set bins alight and hurled sticks and stones at police officers who retaliated with tear gas.(0:53)