The Hermenschauer was asked to remove an article that references this article on Feuerwehr.de. The article discusses a company that holds a combined word and image trademark for "First Responder" and is attempting to take action against simple mentions of the word portion in domains and online presences. This is despite the fact that, according to the description on Feuerwehr.de, they have already been rejected by courts for this and there is a clear ruling that their trademark is only valid in combination.
To me, this looks very much like an attempt at censorship. Though I don't understand the reasoning behind it—the trademark holder apparently set up or is trying to set up an online magazine around the topic. But something like that can hardly work if you first antagonize the people who actually deal with the subject matter. Who would be interested in such an online magazine if they had previously received a cease-and-desist letter from them?
Certainly, the partly privately-run fire department websites are potential competitors—but that's just how it is on the internet, you're not alone there. And lawyers don't help with that either.