If I had more time, and cared, I would parse the ignorance of your statement.
Sadly, I do not have the time, and I do not care enough to cure you of your ignorance.
I am not sure what ignorance you would choose to parse, but I will go with the elected representatives since it is harder to find the crime statistics.
In DC there is one black elected Congresswoman (non-voting), one elected black Mayor, 13 elected Council Members of whom 7 are black, and 6 white (2 of whom are also gay), and likely to remain in that configuration after an election to replace the black man who moved from the Council to the Mayor’s office. Thus at the top level there are 9 black elected representatives to 6 white. There are also elected School Board and ANC representatives (like aldermen) who also reflect the majority black makeup of the city. So what is the ignorance you would cure me of if you cared and had the time?