If the Muslim Brotherhood denied a ballot, or refused to accept defeat, tougher measures could then have been contemplated. As it is, the army’s coup was indefensible, and its slaughter of mostly unarmed protesters ranks in infamy with the Tiananmen Square massacre of 1989, and those of Libya’s former leader, Muammar el-Qaddafi, and Syria’s Hafez and Bashar al-Assad.