Tourist, that's easy to answer:
1.
a. Most people use mechanical transport whether private or public.
b. Everyone uses energy derived from burning fuel for heating, cooling, lighting or food & goods transport.
2. Almost everyone in the developed World flies at some time in their life or consumes food or goods delivered by air.
So, we are ALL involved.
In the case of an air display only those who are interested in aviation or, at least, an entertaining day out are involved. Those driving past are not and may never have been.
I do think we're getting close to angels on the point of a pin here.