Well, I have encountered people being (or claiming to be) offended by what in all rights would be an assault on someone else's status. This could be a form of empathy, or in many cases an attempt to gain status themselves through a show of sympathy. This does seem like a potential occurrence of legitimate offense not caused by a perceived direct or indirect threat to the status of the person being offended, iff the offense is genuine- something which I cannot personally attest to, never having experienced this myself.