MACEDONIA-POLITICS-UNREST-DEMO

The Croatian (L), Serbian and Macidonian flag are out out as people sit outside tents set-up by protesters near the Macedonian Government Building, the offices of embattled Prime Minister Nikola Gruevski, a day after an anti-government protest in Skopje, on May 18, 2015. Macedonia's opposition vowed to continue street protests after 20,000 people marched through the capital Skopje on May 17 demanding that the country's Prime Minister Nikola Gruevski step down. With the small Balkan country divided by a deep political crisis -- and still in shock after last weekend's battle with ethnic Albanian gunmen in which 18 died -- Gruevski's supporters are to march on Monday after Sunday's big show of force by the opposition. AFP PHOTO / ROBERT ATANASOVSKI (Photo credit should read ROBERT ATANASOVSKI/AFP via Getty Images)