"sorry for those who got offended" finish. Black humuor also offends some, not all definitely (like you). But what about the others who are offended. What about those victims family in the Vilaggio tragedy, the wounds are still fresh, do you think they will see it as black humor? Being sensitive to the feeling others will not downgrade you a little. Will a sorry meant so much to her as to the hurt she inflicted to those offended parties?

Joke is a joke. We all make one, but again, be sensitive. Practice restraint.