Sorry but the LA police (at leate in Italy) had the fame to be violent and rogue,so if the money ofcthe italians had the same color why could be so hard to bribe a cop? Maybe the cops gain better extortiong the other white criminals? Maybe this is the reason or maybe they prefer to direct extort money to all the streets criminals.

For import sicilians from italy,there was a total number of people that can immigrate every years and the gov could make a veto on a person if had criminal records.