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Roger McNamee on "Facebook catastrophe"

One of Facebook's early investors is urging users to wake up to what he calls the dark side of social media. Longtime tech investor Roger McNamee advised Facebook founder Mark Zuckerberg in the early years of the company. Now he's the author of "Zucked: Waking Up to the Facebook Catastrophe." McNamee joins "CBS This Morning" to discuss why he thinks Facebook is a threat to democracy, public health and users' privacy.
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