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Mark Zuckerberg to face Congress this morning. Watch live on NBC TV, @MSNBC, https://t.co/d56D0ZPijl , https://t.co/DuKX65HG7b and @NBCNews Periscope. + Live blog updates: https://t.co/rB8U3aKdX0 https://t.co/fxDgDJBKzf — PolitiTweet.org