(ISTANBUL) — Tens of thousands of supporters of Turkey’s main opposition group, joined by some ruling party members, rallied Sunday in Istanbul to denounce a July 15 coup attempt, a rare show of unity that belies opposition unease over President Recep Tayyip Erdogan’s crackdown since the failed uprising. The flag-waving demonstrators in the city’s Taksim square reflected widespread rejection of the coup attempt in a NATO country that has endured several coups in past decades.