Conditions had been maturing for revolution in Iran before the 2009 elections. All the mass movement required was a channel through which to express itself. As there is no mass independent organisation of the workers, the movement found a crack within the regime and opened it wide. This was the movement against electoral fraud. But Mousavi does not represent the movement. On the contrary, he tries to hold it back. What is required is a genuine organisation of the working class and youth. The first step towards that is to gather together the most advanced layers among the workers and youth and weld them into a Marxist current within the movement.