Greek riot police clash with protesters during a protest against the Macedonia name deal in Athens, Greece, on Jan. 20, 2019. A mass rally held in front of the Greek parliament in Athens over the Macedonia name deal was marred by violent clashes on Sunday. Syntagma Square was converted into a battlefield when hooded protesters, trying to get into the parliament's courtyard, threw rocks and firebombs at riot police. Police forces used tear gas to repel the attempt. (Xinhua/Lefteris Partsalis)