D.C. Code § 22-3311

Any person guilty of disorderly and unlawful conduct in or about the public buildings and public grounds belonging to the United States within the District of Columbia, or who shall wilfully injure the buildings or shrubs, or shall pull down, impair, or otherwise injure any fence, wall, or other inclosure, or shall injure any sink, culvert, pipe, hydrant, cistern, lamp, or bridge, or shall remove any stone, gravel, sand, or other property of the United States, or any other part of the public grounds or lots belonging to the United States in the District of Columbia, shall be fined not more than the amount set forth in § 22-3571.01, or imprisoned not more than 6 months, or both.