The Israeli government on Thursday released and deported hundreds of flotilla activists who attempted to breach Israel's naval blockade of Gaza. Outrage abroad over the activists' treatment prompted several countries to summon Israeli envoys to hear their concerns. About 420 activists departed Israel on planes bound for Turkey, where they landed Thursday evening in Istanbul. Wearing grey sweatsuits and Arab keffiyehs, they descended stairs to the runway flashing two-fingered salutes and chanting