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This week: impeachment, inauguration potential protests loom

This week: impeachment, inauguration potential protests loom

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Police on horseback, drones: PA Capitol tightens security

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Tamara Keith and Amy Walter on President Trump's legacy

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Marathon confirmation hearings held for Biden's nominees

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PBS News Hour

How online extremism experts saw the Capitol riot coming

While the events at the nation’s Capitol last week caught many by surprise, those who monitor extremism on the internet had already seen a rebellion brewing. Charlie Warzel is the New York Times Opinion Writer-at-Large and reports on online radicalization. He joins Hari Sreenivasan to discuss the online spaces and rhetoric that fomented violence at the Capitol.
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