Trump's plan to address crime in D.C. calls for deploying National Guard troops along the National Mall overnight Wednesday into Thursday morning, according to a source.

The National Guard is a reserve force of the U.S. military that is typically deployed by states in response to natural disasters, although it has been used in the past by presidents to help quell domestic unrest - including President George H.W. Bush during the Los Angeles riots in 1992.

Omar Wasow was studying race and politics at Stanford University when on April 29, 1992, a jury acquitted the police officers who beat Rodney King of almost all charges. For nearly a week, Los Angeles was on fire,

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