Kuma's, a Chicago burger joint, decided to market a "Ghost Burger," featuring an unconsecrated host as a garnish.

Needless to say, this scheme provoked protests by Chicago Catholics.  It wasn't only the older group that was upset at this marketing ploy.  Here's an eloquent response by Justin Bartkus, a Notre Dame grad and a Chicago resident.

So here's my question:  Where is the line between good-natured joshing and offensive mocking? I don't believe that Kuma's intentionally planned to offend Catholics--it's bad business in Chicago, if nothing else.  But how do businesses, and comedians for that matter, decide where the line is?