No, I have no children. I was fortunate - although I am the eldest child in my family, my younger sisters all had children before I married. Having experienced everything from changing diapers to tantrums to having the police bring the little hoodlums home in the middle of the night, I came to the conclusion that Mark Twain was right. Children should be kept in a barrel and fed through the hole in the barrel until their 18th birthday; at that time, the hole should be sealed up.
The vast majority of children are not the hoodlems that the police brought home in the middle of the night.
On another thread, you enumerated the benefits that your karate class has provided to you (Isshin Ryu, if I recall), most of which were not related to the execution of strikes and blocks. Many other posters have related the positive effect that martial arts have had on themselves.
I am not personally a proponent of any sort of mandatory martial arts class in schools; the public school system in this country has a lot of problems that need addressing, many of which, if addressed, would have a positive effect on the kids.
But I am not opponent of martial arts in school either.
Kids these days need all the help that they can get. A martial arts class will not make them more likely to fight. If anything, it may help to improve their ability to interact with both eachother and with authority figures, keep them in shape, and may even improve their grades.
I agree with your assessment of criminials, however, as I stated earlier, I disagree with your statement,
Teaching martial arts to prisoners is a bad idea.
Teaching martial arts to children in public schools is a bad idea, and for the same reason.
I disagree because kids are not criminals being punished. If it is a bad idea to teach martial arts to children in school, then it is a bad idea to teach children martial arts period. If it is a bad idea to teach children martial arts, then their turning eighteen does not magically change anything, thus it is then a bad idea to teach adults martial arts; there are plenty of criminals between the ages of eighteen and forty, probably more than there are juvenile criminals (that is a guess, as I do not have actual figures to back that up), and even our elected officials do not show particularly good judgement. Nor do the leaders of our financial sector. Obviously, adults make bigger blunders than the kids do, mainly because they have access to much more of the world than kids do.
If martial arts are beneficial to people in building character, the time to start is not when the kid is eighteen. And by having it in public schools, the kids who need it most (the disadvantaged who cannot afford to pay for class in a dojo) are then reached. In the long run, it might make your job as a police officer easier.
Daniel