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Mark Zuckerberg: Facebook needs to be more proactive in policing developers

Facebook CEO Mark Zuckerberg was back on Capitol Hill for a second round of grilling from lawmakers. He testified before the House Energy and Commerce Committee a day after appearing before a joint Senate panel. CNET executive editor Roger Cheng, TechRepublic senior writer Dan Patterson and Jennifer Grygiel, assistant professor of communications at Syracuse University, spoke with CBSN about the House hearing.
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