I see why there would be a fuss about this, since it has actual effects in the real world.
Here's a thing, though- you shouldn't expect other human beings to follow the same moral code you do. They are laughing at the suffering of other people, yes. To a lot of people, that is amoral/immoral (depending on who you ask to). To some it isn't, and some people simply don't care about that.
Anyway, you reeally shouldn't expect respect, compassion, understanding or anything else from other people. Specially not from everyone else in the world. You'll just get needlessly angry when you inevitably don't recieve that. Most of us value ourselves and our needs more than we do others- that much is natural. Some people just happen to value their fun over the suffering of other people. And I think that's ok too. If you enjoy this type of bad joke, It's guaranteed fun vs possible suffering to someone you don't know- the choice most people would take is obvious. It's not right, but not everyone cares about what's right or wrong- getting angry about it just makes those people have more fun.
Me? Personally, I don't think it's funny. I see where both sides are coming from, and I don't think it's the type of discussion that leads anywhere. If the thread gets too heated or derailed, I will be closing it, so be sure to keep your calm, everyone.