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'Sedition and insurrection': military chiefs use key term to characterize Trump mob attack

03:34

Rachel Maddow points out that a letter signed by the U.S. military service chiefs condemning the Trump mob's riotous attack on the U.S. Capitol, they characterize the attack as 'violence, sedition and insurrection,' which is notable because of the focus on insurrection in the article of impeachment against Donald Trump, and other matters that the U.S. military does not typically get involved in.