A neo-Nazi fight club that secretly infiltrated a Tennessee martial arts school where young children train has been banned from the facility, after an inquiry by the Guardian.Disturbing story about neo-Nazis getting into BJJ schools. The one comforting thing is that one of Nazis in the article is
not that good.
Once again, I have to say that setting the tone matters at a martial arts club. There are good Brazilian jiu-jitsu schools, but BJJ as a whole is neutral about ethics. They just don't say anything about it.
Judo only has two behavioral goals, but they're stated up front: 1) Mutual welfare and benefit 2) Maximum efficiency with minimum effort. This and all the respect stuff with the bowing and helping people up sets up a vibe that is just not attractive to knuckledraggers and racists and knuckledragger racists.