Are your first couple of paragraphs steeped in sarcasm, or are you serious?  If the latter, you need to read a bit about Asian gangs in many cities in California. While not as numerous or populated as other ethnic gangs in our state, they certainly are NOT absent and certainly DO account for serious crime.  I live in an area that is very diverse with people from many backgrounds, including Asian -- I have no axe whatever to grind -- but a valid view is helpful when you make blanket generalizations as you did.