Riot policemen arrest a woman after hundreds of people tried to reach the city's main Kizilay Square to celebrate May Day in Ankara on May 1, 2014. Earlier, riot police in Istanbul used water cannon and tear gas against thousands of protesters who tried to defy a May Day ban on demonstrations, injuring at least 50 people. After a final warning, hundreds of riot police moved on the crowd seeking to breach the barricades leading to Taksim Square, declared off limits to Labour Day demonstrators as the epicentre of anti-government protests in recent months. In the capital Ankara, police fired volleys of tear gas and jets of water on hundreds of protesters trying to march to the Kizilay Square, also declared off limits. (Getty)