This is a sad and tragic story but lets put it in perspective. these deaths are no worse than any other..............ANY death is a tragedy.
I don't agree. We are all born to die one day. It is sad to loose loved ones but it's not a tragedy if someone has lived to a good age and had a happy and fullfilling life - in that case it is something to rejoice.
In this particular accident they were premature accidental deaths of (presumably, but not verified) fit people in the primes of their lives - that is tragic and worse than many other deaths.