[Redbob]

I wonder to what extent that pilots' organization supports the right of citizens generally to arm ourselves for our own defense.

Probably not at all, in which case I say, fine:
I'll support arming pilots when pilots support an armed citizenry.

[TERMINATTOR]

You've got that right! Passengers and crew have just as much right to KBA as the pilot, both on the ground and in the air. What ever happened to - "All men are created equal"?