“If the minimum wage is, in short, raised from $3.35 to $4.55 an hour, the consequence is to disemploy, permanently, those who would have been hired at rates in between these two rates. Since the demand curve for any sort of labor (as for any factor of production) is set by the perceived marginal productivity of that labor, this means that the people who will be disemployed and devastated by this prohibition will be precisely the “marginal” (lowest wage) workers, e.g. blacks and teenagers, the very workers whom the advocates of the minimum wage are claiming to foster and protect.”  - Murray Rothbard