Nobody has the right to not be offended. That right doesn't exist in any declaration I have ever read. If you are offended it is your problem, and frankly lots of things offend lots of people. I can walk into a bookshop and point out a number of books that I find very unattractive in what they say. But it doesn't occur to me to burn the bookshop down. If you don't like a book, read another book. If you start reading a book and you decide you don't like it, nobody is telling you to finish it. To read a 600-page novel and then say that it has deeply offended you: well, you have done a lot of work to be offended.