What’s unfolding in Washington, DC, has drawn chilling comparisons to the darkest chapters of American history. Advocates warn that the capital is no longer simply a symbol of democracy, but a testing ground for heavy-handed policing tactics that many say resemble the Jim Crow era and the terror once endured during the days of Emmett Till. Residents describe their neighborhoods as living “under siege,” with federal agents and militarized police patrolling the streets under the banner of a so-called “crime crisis.”…