NEW YORK - Protesters invade the halls of parliament in Madison. Some are dragged out. The police barred the doors. The legislators, who were shut out, in a rather daring, coming from the window. What happens in Wisconsin, was passed by the Democrats to the Republicans in November? Why so much anger on the part of public employees? It happens that, after weeks of bitter debates and massive demonstrations, a law was passed limiting the rights of public workers' unions (the so-called union).