Honestly I think it is fairly problematic for them to even relay the request that you take it down. If the aggrieved party has an issue with what you are saying but you are operating within your rights and the law, then the aggrieved party can make the request themselves.
I think that having the police, or a politician (http://www.washingtonpost.com/wp-dyn/content/article/2010/09...) or any other member of the government relay those requests is out of line.
It certainly wasn't suggested in the way the Mafia might suggest you pay for protection, if that's what you're thinking. There was no sense of authority when they asked it. It sounds like the same thing happened to OP.