An excellent article over at the TKRIblog:
Spend a few years in karate and you will find that there are all sorts of scoundrels associated with karate who—for all of the years they have spent talking about character perfection—are nothing more than bullies, thieves, liars, con men, or worse. There are lots of good people who train in karate as well, but in my experience the distribution of bad to good people pretty well matches the distribution in society at large; there is nothing magic about karate that makes its practitioners good people or moral exemplars.
Claims regarding the moral benefits of karate are pretty ubiquitous. These claims are everywhere from the copies of the dojo kun hung on training halls to the cheesy adverts in newspapers offering to help “little Johnny” stay off drugs, become more disciplined, to raise his grades, and turn him into Superman if his parents fork over some cash to “Grandmaster” (hold on tight to your wallet when someone starts trying to sell you morality.)
This association between karate and character does more than just line the pockets of snake oil samurai. It provides a platform for unwarranted moral posturing on the part of your friendly neighborhood shihan. If you want to find someone worth venerating as a moral exemplar, you are more likely to find them volunteering at a soup kitchen, working with special needs kids, or lending a hand at the local homeless shelter than at a karate dojo.
The moral pretensions of disingenuous karate teachers can be genuinely harmful. I remember a club that was affiliated with the same national organization I belonged to once hosted a seminar taught by a senior karate teacher. About an hour after training (ironically concluded with a period of seated meditation and recitation of the dojo kun), the group gathered at a local restaurant and the visiting instructor loudly asked the students “who is gonna f*** sensei tonight?”. This question was not meant to be funny or ironic, considering this man’s history it probably counted more as foreplay.