A protester clashes with police at a demonstration against the agreement reached by Greece and Macedonia...
A protester reaches for his gas mask as he clashes with police at a demonstration against the agreement reached by Greece and Macedonia to resolve a dispute over the former Yugoslav republic's name, during the opening of the annual International Trade Fair of Thessaloniki by Greek Prime Minister Alexis Tsipras in Thessaloniki, Greece, September 8, 2018. REUTERS/Costas Baltas