Of course, if we activated a severe security plan (ie second door between pax and FD, Flight Eng to supervise the baggage loading, and "arrest of ANY difficult passenges") then we might get the consumer confidence back.
Last year I had a good bitching session with the training department heads about F/D security and the fact that we are strapped in our seats whilst any A55hole can enter and grab the Fire Ax behind my head and kill us all.
I was made to feel like a paranoid idiot. Shortly after this there was that episode with the psycho on the Germania F/D who beat the captain to a pulp.
Flying, like economy and shares, relies on confidence. In the 1920s there was a lack of confidence that crippled the world. If our accountants managed to grasp this simple fact then we might just survive. (litterally!)
(Anyhow, my 2 cents)