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Facebook facing growing outrage over misuse of data of some 50 million users

Whistleblower Christopher Wylie, a former employee of a British company called Cambridge Analytica, is coming forward to say the company misused millions of people’s Facebook data without their consent. His claims are now drawing concern that the British company helped fuel support for President Donald Trump, and at least one lawmaker is urging Facebook CEO Mark Zuckerberg to testify. NBC’s Peter Alexander reports.

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