Martin Shkreli, who caused public outrage after raising the price of a prescription drug by more than 5,000 percent, was arrested on Thursday for engaging in what U.S. prosecutors said was a Ponzi-like scheme at his former hedge fund and a pharmaceutical company he previously headed. Reuters witnessed Shkreli’s predawn arrest at the Murray Hill Tower Apartments in midtown Manhattan. Many on social media said Shkreli was getting what he deserved.