THE victims of Soviet communism would find it hard to understand, but a giant yellow banner was unfurled in the centre of Paris last week, bearing portraits of Lenin and Stalin. “Only socialism can save the world” it proclaimed in black ink. Welcome to the annual May Day rally in Paris, always a festive affair. Salsa music blared from the back of a lorry and an aroma of barbecued Merguez sausages filled the air. Trotskyite militants handed out leaflets denouncing the capitalist system. The march, which attracted 60,000 people under flags emblazoned with the hammer and sickle, was a reminder...