I wouldn't object to labor unions if they behaved in a moral manner, but they seem incapable. They have a right to withhold their own labor, but they have no right to prevent other people from selling their labor or the business continuing to operate. But they always engage in what to me seems to be illegal acts, like sit-down strikes where they seize the means of production and deny it being used, or block the entrances to a work site, or violently assault the people willing to work. They're filthy communists and they should be put against a wall and shot.