I generally agree that not everything is racially motivated, but it's pretty well documented that this is, or at least was, historically.
Dream City[1] is a good book about the history of DC. Part of the reason there is such a large Black population is that a lot of freed slaves moved there after the Civil War. In later years, Congress, which is effectively charged with governing the District, and of course included representatives and Senators from former Confederate states, definitely considered that when deciding whether DC should be able to manage its own affairs. DC wasn't granted Home Rule and its own city government until 1973.
Dream City[1] is a good book about the history of DC. Part of the reason there is such a large Black population is that a lot of freed slaves moved there after the Civil War. In later years, Congress, which is effectively charged with governing the District, and of course included representatives and Senators from former Confederate states, definitely considered that when deciding whether DC should be able to manage its own affairs. DC wasn't granted Home Rule and its own city government until 1973.
[1] https://www.amazon.com/Dream-City-Power-Decline-Washington/d...