Is it disturbing because it's real? Because you can actually see the person, as opposed to in a vehicle or aircraft? Because it's in a loop? If it didn't loop would it be less disturbing? Is it just disrespectful? What about the Challenger/Columbia explosion? The fall of the WTC towers? The assassination of JFK?
Keep the population under control? How do you figure? If they're desensitized and no longer disturbed how can they be controlled?
Graphic death is part of the daily news in America? Yeah and bare titties are part of the daily news in Europe, nary a weather update without 'em.
People die, try not to let it bum you out too much or you're always going to be bummed out.
edit: I'm not going to argue that it's not tasteless.