Michael Milken was a threat to the complacent Wall Street cartels established by the New Deal. So ambitious prosecutors like Rudy Giuliani saw an opportunity to get in good with Wall Street by taking him down.
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.
Because banks make unbacked "loans," they create new money that later disappears when repaid. If these loans are not renewed, economic depression sets in.