I think society is getting more sensitive, but gradually.
I've not been offended in a long time, though, and just don't care. I understand the gravity of events, and generally I won't make insensitive jokes, but I don't mind if somebody does. My grandfather died of skin cancer, and if anyone makes cancer jokes or calls something or someone cancer, I don't even flinch.
I think if everyone had this attitude, there would be a lot less trouble.