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Mark Zuckerberg Was Nervy-yet-Fiery Before US House of Representatives. (Photo Credits: YouTube ScreenGrabs)

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Mark Zuckerberg Was Appearing Before US Senators To Testify in Recent Controversy Involving Cambridge Analytica.

Facebook Owner Was Stunned By Few Questions Thrown At Him. (Photo Credits: YouTube ScreenGrabs)

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Mark Zuckerberg Testified Before US' Congress in Relation to Data-Leak Fiasco.

Mark Zuckerberg Held Nothing Back Before US House of Representatives. (Photo Credits: YouTube ScreenGrabs)

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Mark Zuckerberg Had One of The Most Testing Times of His Life.

The Social Media Tycoon Was Caught Off Guard! (Photo Credits: YouTube ScreenGrabs)

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Mark Zuckerberg was all smiles initially when took seat before US House of Representatives.

Facebook Founder Was All Smiles! (Photo Credits: YouTube ScreenGrabs)

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Mark Zuckerberg was present before US House of Representatives to testify in data-breach scandal.

Facebook CEO Wore A Confident Look. (Photo Credits: YouTube ScreenGrabs)

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Mark Zuckerberg was present before US House of Representatives.

Mark Zuckerberg Seemed Quite Ecstatic! (Photo Credits: YouTube ScreenGrabs)