This is the dramatic story of how a noted tech venture capitalist, an early mentor to Mark Zuckerberg and investor in his company, woke up to the serious damage Facebook was doing to our society and set out to try to stop it.If you had told Roger McNamee three years ago that he would soon be devoting himself to stopping Facebook from destroying democracy, he would have howled with laughter. He had mentored many tech leaders in his illustrious ca ...