John Oliver incorporated the Central Asset Recovery Professionals (CARP, named for the bottom-feeders) debt collection firm for $50 and purchased $60,000 in medical debt. He then promptly forgave the debt allowing 9,000 people to walk away from nearly $15 Million in zombie medical debt. Debt collection is a grimy and under-regulated business and John Oliver does a great job of lambasting their predatory practices.
It should be noted that back in 2012, Occupy Wall Street did a similar thing called a Rolling Jubilee