If you live in downtown Oklahoma City, you live in the BID (business improvement district [comprised of all the downtown districts]), which is managed by the non-profit organization Downtown Oklahoma City Partnership. Your assessment goes towards improvements and activities downtown that are above and beyond what the city does with its sales tax revenue. All property owners (individuals and businesses) in the BID pay this assessment. Here is a video presentation by Downtown OKC: https://youtu.be/AqIUPInuGyg