A Texas mattress shop has apologised for a "disgusting" and "offensive" advert to promote its "Twin Tower Sale".
Miracle Mattress was inundated with complaints after launching the sale to coincide with this weekend's 9/11 anniversary.
The advert, now deleted from its Facebook page, features two men toppling into mattress towers emblazoned with the US flag.
In the foreground, shop manager Cherise Bonanno says: "What better way to remember 9/11 than with a Twin Tower sale?
"Right now you can get any sized mattress for a twin price. Full mattress? Twin price. Queen mattress? Twin price. King mattress? Twin price. Store-wide sale all day long."
Predictably, the video prompted fury on social media.
Evelyn Sainz Jauregui posted in the comments section: "I find it hard to believe you knew anyone or any of your employees knew anyone who lost their lives in 9/11!
"If that were the case they would have been so disgusted with your commercial that it would have never seen the light of day! You should be ashamed!"
Amy Duncan said she was "embarrassed" to live in the same town as the shop.
Meanwhile, Ozzy Santos said Miracle Mattress "deserves to go out of business".
Mike Bonanno, who owns the San Antonio shop, issued an apology on Facebook.
He admitted the advert was a "tasteless affront to the men and women who lost their lives" and promised disciplinary action for the staff involved.