Weeeee:
So by all means learn from what went wrong and use balanced judgement about other potential risks, but knee-jerk outrage and calls to "ban ban ban" are over the top. There is risk in everything and sometimes it will bite. 63 years without loss of spectator or bystander, despite the loss of many aircraft and pilots, suggests that we have mostly got it right.
Indeed there are risks in much of life. Some are unnecessary, though. Having an airshow at such an airport as this one is high on the unnecessary risk list. Apparently, the government aviation authority now concurs.