No, the innocent party is weak if they let a joke rattle them so much that they kill themselves.
In my opinion, a joke is either way off the mark, and easily ignored, or too close to home, and thus hitting something that you have either done wrong and should rightly feel bad about, or something that was not wrong and that you should stop punishing yourself for.
Regardless, the beauty of free speech is that, even if you feel greatly offended by something said (not done), you can defend yourself with as much vitriol as you like.
