REUTERS/Adam Hunger Chris Hughes, one of Facebook’s original cofounders, called Mark Zuckerberg’s power "unprecedented and un-American" in a scathing op-ed in the New York Times on Thursday. Hughes, who was Zuckerberg’s roommate at Harvard, argued Zuckerberg’s social media empire should be broken up into separate public companies, and that Zuckerberg himself wields too much power. […]