By Karolina Tagaris THERMOPYLAE, Greece (Reuters) - Flaming torches raised, far-right Golden Dawn supporters dressed in black chanted the Greek national anthem as darkness fell on Thermopylae, where King Leonidas and 300 Spartans defied a vast Persian army in 480 BC. Standing before them, a member of the European Parliament from Golden Dawn, the euro zone's most extreme right-wing political party, roused the crowd with defiant denunciations of enemies at home and abroad ahead of a national election on Sept. 20. "The message of Leonidas - Molon Labe (Come and get it) - is as timely today as ever for everything tormenting Greece," the retired lieutenant general, Eleftherios Synadinos, told supporters waving flags bearing the party's Swastika-like emblem.