Anti-government protesters gather in Istanbul's Taksim square June 5, 2013. Prime Minister Tayyip Erdogan returns on Thursday to a nation racked by protests against his leadership, in what could prove a pivotal moment in Turkey's worst political unrest for decades. Erdogan returns from a visit to North Africa to face demands that he apologise over a fierce police crackdown and sack those who ordered it, following a week of protests that have left two dead and more than 4,000 injured in a dozen cities.[Photo/Agencies]