David a carter.
You seem to be the only one making sense in your post,well done.
For those who suggest "acceptable risk" as mentioned by 757 driver ,what nonsense.
There should be NO Risk to anyone except display pilots be it spectators at the show or people not involved in any way.
500 feet minimum and display only over water or zero population.
If not NO SHOW.
So, basically, no more airshows
There is no such thing as zero risk, except by grounding all aircraft and keeping spectators safely tucked home in bed watching a CGI-version of aerobatics or videos of classic Farnborough to see what you're missing
Please keep some sense of a proportion so close to this incident