Perhaps chavs have the right to take ownership of the word and use it...just like "sluts", "gays", and the "n word" have been reclaimed by the offended groups.
Anyway I do hope, within reason, we can escape the "tyranny of the fragile ego" that request (effectively demand?) a positive only approach to discussion of ideas. Maybe best left in the modern oppressed workplaces where we too often find ourselves.
Not that I'm against anyone's right to make such requests per se, I'm not. But listening to, and consideration of, counter opinion is healthy IMO.