I just read a story about Bruce Lee and his struggles when he first came to San Francisco from Seattle. I guess opening Kung Fu schools and teaching it to just any body was a major no no. The other Chinese born masters who had schools only wanted it taught to those of Chinese heritage. So unhappy were they they sent some bad dudes to beat up Lee. Lee won but learned a lesson. He stepped back and looked at himself critically and went on to improve himself.
The blog tells the story much better than I. Go read for your self! You can also buy the cartoon print.