Many thousands of Turks massed Sunday for the first cross-party rally to condemn the coup attempt against President Recep Tayyip Erdogan, amid a purge of suspected state enemies. Istanbul's Taksim square was transformed into a red sea of national flags as Erdogan's ruling Islamic-conservatives and the opposition secular camps briefly set aside their differences in a show of national unity. Despite the high tensions since the coup attempt, the mood at the Istanbul rally was strongly patriotic.