How did the norteno gang start?

on 1967 Mexican idependence day the nuestra familia attacked the Mexican mafia ( la ema or surenos) in the 4 major prisons in California and made the stand . the nortenos' then consisted of paisas or normal Mexican people who were tired of being apressed and forsed to do things that endangered their family. so they to their stand on theat day and made them selfs know.