A massive bonfire blazed in the central square of Ethiopia's capital city, Addis Ababa, on Thursday night. But by Friday morning, the mess had been swept away, leaving nothing but a giant spot of soot on the asphalt. Thousands of people had flocked to the arena, called Meskel Square, to watch the ceremonial lighting of the fire for the eve of Meskel, a national holiday also known as the Finding of the True Cross. Ethiopians from across the country -- and visitors from around the world -- carried yellow daises, wooden crosses and wax candles as the pile of wood...