Workers of the world, unite
A pilots' strike to force the issue of allowing armed pilots is a nonstarter. The pilots themselves won't go along with it. Their counterproposal is quite acceptable, but will take some balls on the part of us business travelers: we all stay home on the same day.

In the meantime, maybe a few self-adhesive labels, saying "We want our pilots to be armed" pasted over the crossword puzzles of the inflight magazines? Toilet stalls in the Red Carpet clubs?