As I have said in an other comment on this thread, the idea is that the city's name is easily discoverable.
You can discover it by highlighting the text, clicking at the button at the bottom of the article, and by following the Wikipedia links in the first paragraph.
I highly doubt that this decision could be upheld in the court. If they want to sue me, I'm ready to "pay for the damage caused" and face legal consequences. Casual Facebook users that are administering Facebook's pages are probably not ready to face the same consequences.
And, since this is my blog, the only third party that could remove the mentions of the name without my consent is my hosting provider (arguably better protection than Facebook offers), but if they do so, I will put on a server on the Raspberry Pi and continue with the distribution.