Posters showing solidarity with the people of Syria created by famed and mysterious street artist Bansky were placed around Capitol Hill this week. Displaying a reworked image of his girl with a red balloon, they’re part of the coalition With Syria‘s effort to mark the third anniversary of the conflict and urge world leaders to end it. But, despite their important message, not everyone in D.C. is a fan because of — what else? — a possible violation of a municipal regulation.

Photo courtesy of a reader

A DCist reader sends along this photo of a poster in Stanton Park affixed with a sticker that reads: “Stop littering our neighborhood with illegal posters! This poster violates DCMR 24-108.”

The municipal regulation in question deals with signs, posters and placards. And indeed, it appears the poster is violating parts of the regulation, including the requirement that it “contain the date upon which it was initially affixed to a lamppost” and “not be affixed with adhesives that prevent their complete removal.” There’s also a rule requiring that no more than three copies of each sign be on one side of the street within one block.

Reggie Sanders from the District Department of Transportation said he’s not aware of any complaints filed with his agency about the posters. Neither was a representative from Movement Media, the public relations team helping with the event.

This evening, With Syria will project the Bansky image on the Martin Luther King Jr. Memorial, Lincoln Memorial, Supreme Court and National Gallery from 8 to 9 p.m. A vigil of solidarity will be held tomorrow at the Capitol Reflecting Pool.