Ethnic violence are what gangs are all about. It's ever been thus.
Whe I was in school in Los Angeles over 50 years ago it was always mexican gang against mexican gang.
In the same areas today nothing has changed.
How can you back that statement up statistically?
90% of all Mexican gangsters kill other Mexicans.Same with the black thugs who blast each other and leave whitey alone.
Those killings that DO cross ethnic lines as outlined in the article are anomolies,not the norm.