D.C. Code § 9-1213.02: Construction or maintenance outside fire limits.

No fence, barrier, or obstruction made, in whole or in part of what is commonly called barbed wire shall be erected, constructed, or maintained within the said District of Columbia, outside of the fire limits, along the line of or in or upon any street, avenue, alley, road, or other public walk, driveway, or public or private parking without a permit therefor from the Mayor of the District of Columbia.