ATHENS (AP).- Riot police clashed with protesting workers barricading the ancient Acropolis on Thursday, using tear gas to clear the entrance to one of Greece’s most famous landmarks. Up to 100 Culture Ministry workers had shut down the Acropolis on Wednesday morning, complaining they were owed up to 22 months’ worth of back pay. The protesters barricaded themselves inside, padlocked the entrance gates and refused to allow any tourists in until their demands were met. Police in riot gear arrived Thursday morning after a court order said the protesters were hindering access to an ancient site and its 2,500-year-old marble temples. “Riot police and violence won’t break the strike,” the protesters chanted, clinging to the entrance gates. But police used a side entrance to break into the site, then used pepper spray to clear the protesters and journalists covering the standoff from