Parallel with this, the political organization advances. It operates hand-in-hand with the trades union movement, inasmuch as the latter prepares the masses for the political organization and even forces them into it. This is also the source that provides the money which the political organization needs to keep its enormous apparatus in action. The trades union organization is the organ of control for the political activity of its members and whips in the masses for all great political demonstrations. In the end it ceases to struggle for economic interests but places its chief weapon, the refusal to continue work--which takes the form of a general strike--at the disposal of the political movement.