I can only reiterate Dr.Sid:
Has placing a gun product in a video game "been demonstrated to be conclusively linked to violence"?
Your question is too specific and framed too narrowly. It should be
"has an advertisement ever broken a law?"
I can only reiterate my earlier post
...Remington were the advertisers and therefore it was they who broke the state law (the Connecticut Unfair Trade Practices Act)
The law does not hold the carrier of the advertising accountable, it holds the advertiser of the product accountable.
When a company makes a misleading claim in a radio advertisement, the radio station is not accountable, the company is!
When a company makes an inappropriate suggestion a television advertisement, the television station is not accountable, the company is
When a company makes an offensive or racist remark in a newspaper advertisement, the newspaper is not accountable, the company is
Advertising can have deeply negative effects on children and young people. It can provoke tobacco and alcohol consumption, encourage obesity and eating disorders and encourage them to try life-threatening or dangerous stunts among other things.