Facebook plans to expand its influence yet again, this time into cryptocurrency, revealing Libra, its own form of the digital currency. At a time when criticism of big tech companies is rising, is this the right move for the social media giant? Roger McNamee, Author of "Zucked: Waking Up to the Facebook Catastrophe" and former adviser to Mark Zuckerberg, explains why he doesn't believe this is a good move for the company.