Rape jokes? I suppose all is fair in humor since it is the context and not the word's evil meaning. There are odd eggs who think rape is worse than murder. I know people who have recovered from rape, but murder?
There is a rumor that only one ancient Jew managed to recover from murder.

Besides if you try to switch rape and murder/kill it doesn't work. For example, the song Raping me Softly is awkward. Or the movies Rape Bill one and two, or the book To Rape a Mockingbird.