I see the responses but if I were a member of the families involved, it's not a tragedy, it's an outrage.
How can it be acceptable that a relative, who I waved goodbye to this morning, is killed by an aircraft from an airshow - while they are driving to work, play or otherwise while not connected to the event?
The fact is, for whatever reason, people who enjoy their sport/hobby as pilot's or organisers have killed innocent people.