Anticapitalists often complain that people with more money exercise power over people with less money. Yet these same people seem oddly untroubled by the fact that central bankers can manipulate the money supply at any time to enrich themselves at everyone else's expense.
Many people are familiar with Eugen von Bőhm-Bawerk's damning critique of Marx, but Philip Wicksteed also took the time to show where Marx had gone wrong and struck his surplus theory of value a fatal blow.
The lack of state-to-state border controls has often served as an excuse to increase federal regulation of all states in the name of "uniform" laws. We've seen this with guns, drugs, alcohol, and migrants.