Just imagine, for a moment, the effect of concealed weapons as a legal right. 9/11 comes around, three guys pull out box-cutters, two-hundred passengers pull out 10mm Glocks.
Yeah, guns have no place on an aircraft (today), but things could have been much different if, as Heston says, people hadn't held their tongues when the issue of gun control was first raised.
Research the days of John Dillinger, Baby-Faced Nelson, and the like. Not all of them were gunned down by law enforcement. Citizens were armed and quite often shot back. Times have changed. Americans today are repressed by wackos of many descriptions. The smaller the number the louder their voice (just count the atheists to see what I mean).
It'll shock you to hear it, but it's my opinion that we truly screwed up when we gave women the right to vote. Since then, it's been a steady ride downhill.