We're speaking OC profiling not general and it's depends on city for worst attention.
Italians are going to be viewed as guidos/mafiasos, Irish most likely in this time frame as connected to IRA or gun runners, Russian/ East European types generally Vors or High tech racketeers, Mexicans/Columbians/Peruvians/Puerto Ricans/Cubans/ drug cartels dons/kingpins, Haitians the Zoe Pound, Jamaicans the Posses/Massives/Yardies, Nigerians the professional scammers, Germans/English the Bikers or professional freelancers/racketeers, and Blacks the Drug Kingpin/Queenpin