Actually, you presented no facts. You just parroted the widely contested statement that minority gangs are more dangerous than white organized crime groups. There is really no scientific way to determine this. Most of the stats are not applicable because there are so many other factors at play. Again, correlation doesn't equal causation. The most accurate conclusion is that the mafia and street gangs are both dangerous.
I agree, but tell me which one you'd prefer outside in your neighborhood.