As a person who has taken up martial arts in my early fifties, I total agree with view that karate should be used as a last resort. I currently work in the security field where I have daily contact with drug addicts and parolees. I feel more confident today as I study Shotokan and TKD, but as a police officer stated so wisely a few years ago, “We become to lax and then suddenly you have a situation.”
Personally, I believe our society in the US has changed and has become more violent. Very good observations of human behavior actordaddy.