The graphic anti-smoking posters in New York City have riled tobacco giants Reynolds, Philip Morris and Lorillard.
The three firms are suing the city over color images of cancer-ravaged lungs, a decayed tooth and a stroke-damaged brain released as part of the City's new ad campaign against smoking.
They claim that the pictures are "unappetizing" and violate the First Amendment.
The stores are being forced to "undertake graphic advocacy on behalf of the city."
The lawsuit claims that is a case of breach of the First Amendment.
Two grocery stores and two retail groups have also joined the suit.