"When the mass of families in a State are without property, then those who were once citizens become virtually slaves. The more the State steps in to enforce conditions of security and sufficiency; the more it regulates wages, provides compulsory insurance, doctoring, education, and in general takes over the lives of the wage-earners, for the benefit of the companies and men employing the wage-earners, the more is this condition of semi-slavery accentuated."