Nothing to do with trademarks but interesting. A Florida teenager was convicted of the 1999 murder of a young girl. It was widely reported that death was caused by the boy imitating wrestling moves, and the case was widely referred to as the wrestling death case. The Parents Television Council made the wrestling death case a feature of its fund-rasing efforts and approached Worldwide Wrestling Entertainment advertisers, presumably in an attempt to either dissuade them from advertising on wrestling shows, or to influence its content. WWE sued PTC, arguing that wrestling had nothing to do with the murder. Apparently they were right. In addition to paying WWE damages, PTE has had to publish this public apology and retraction.
Gabriel Perle has an excellent chapter on libel and defamation in The Publishing Law Handbook. Regardless of your field of law, it’s worth reviewing on a regular basis.