Tourist
Concur completely. Everything we do has a risk associated with it, it's just that we tend to ignore the risks that are "statistically" negligible because the probability of it occurring are very, very, very, very low.
Strake
Sorry mate, but the chance of getting hit by an aircraft is always there as long as you are under an aircraft, but the average human looks at the numbers and says "that'll never happen". There is no such thing as "absolutely safe", just a level of safety that acceptable to you.
How many people die on our roads every day when they were just popping down to the shops / into the office / visiting someone? Yet we still drive cars.
I feel sorrow that this event happened, my thoughts are with everyone involved, from the pilot and the groundcrew and the staff who organised the event, to the passersby who died, and the emergency services who attended. However, I would not call for a ban on flying displays, just like I would not call for a ban on motor racing, hang gliding, or anything else that people do for a bit of excitement which ultimately could kill the participant and anyone around them.