It's still he said/she said until there is an actual report filed and the DA is looking for this cat. Murder is murder man....you seriously believe that racial shit when it comes to violent crime? ESPECIALLY in California? C'mon now. You know how many racist white boys are in the pen for killing a non white person?? They get sent to prison in RACIST states, California isn't even considered a racist state, we've always been diverse as fuck. I'm talkin states like Oklahoma, Arkansas, Texas, etc...
Why don't you do yourself a favor, and find out WHO was "murdered", then go to the Social Security Death Index and put their names in, find out when they died and where they died. If they aren't listed, chances are, the murder never occured.
My money says, if the event actually took place like you heard, and the cops came, and the kid was set free, the other cats probably had weapons of equal or greater value, and it was deemed self defense on the spot.