Why must there be someone that always does this? There need not be moral police on patrol at all times. It's not barbaric for someone to not really care that someone they don't know died. People die every day, should we all just stop joking? Just because Chris Henry is a football player, doesn't mean everyone has to go into mourning.
I for one, wouldn't find myself making a joke about his death. But I also don't feel the need to be sad that a guy that jumped onto the back of a moving vehicle in an attempt to pull his girlfriend out of it, ended up dying in the process. This is the kind of stuff that typically gets on the Darwin Awards when it happens to some shmuck that isn't a celebrity.