Well, things change, and people forget. Over 40 years ago, disembowelings and stabbings weren’t uncommon in a south Texas city. A friend whose family was in the oil business was disemboweled during a high school football game. Tourist towns don’t like to advertise crime problems.
The laws against carrying knives with blades larger than 5 1/2 inches were already in effect at that time.
Are you suggesting that laws against carrying knives reduced crime?