And just how stupid and unnecessary was this?
Well, it was completely and totally stupid and unnecessary because there wouldn't have even been any (or hardly any) of the scary rifles on display. Ask any gun dealer. There aren't any to be had at almost any price.
But, that said...the exhibitors and dealers absolutely did the right thing by pulling out. There has never been a more important time or a more important issue (with the obvious exception of abortion) to stand firm on. Now if only we could find a way to be as principled about the budget, the deficit, taxes and spending.