I think it's a double standard to allow aikido and contact judo and exclude karate and tae kwon do. Most karate and similar arts have within their training a system of forms or katas that are completely no-contact. Aikido is a very agressive joint manipulation art and judo can cause as much injury as any martial art. It shouldn't be to much of a stretch for BSA to include martial arts that involve the use of forms/katas and other no-contact practice. Katas and forms have less contact than basketball, touch football, and several other BSA allowed sports.
