A Latino leader of the Azusa 13 street gang and his son have been sentenced in federal court to lengthy prison terms after pleading guilty to conspiring to attack blacks and force them to leave the city

Santiago “Chico” Rios was sentenced to 19 years and seven months in prison by U.S. District Judge Gary A. Feess. His son, Louie “Lil Chico” Rios, who is hearing-impaired and required a sign-language interpreter, received a 10-year sentence. Both Rioses have “Azusa” tattooed above their upper lips. Louie Rios has “Azusa gang member” tattooed on the back of his head. At sentencing, Feess said that Santiago Rios was a “proponent of the racial cleansing of the city of Azusa” and an admitted participant in “every significant aspect of the gang’s activities.” The Rioses and 49 other Azusa gang members were arrested in June 2011 and charged with, among other things, a conspiracy to “cleanse” Azusa of its black residents, according to prosecutors. All 51 have been convicted. Eight remain to be sentenced, said Reema El-Amamy, the federal prosecutor in the case. Santiago Rios was a reputed Azusa 13 “keyholder” — a shot-caller anointed by the Mexican Mafia prison gang to tax drug dealers, sell drugs and funnel the proceeds to Mafia members, according to a federal plea agreement. In that position, he implemented an Azusa 13 policy dating from 1992 of targeting and harassing black people in Azusa, according to the agreement. The push to attack blacks was instigated by Ruben Rodriguez, a Mexican Mafia member from Azusa who has since died. The gang would assault blacks that they spotted in public places and spray racist graffiti. Some gang recruits were asked to attack blacks as a way of proving their worth to Azusa 13, according to the plea agreement. The Azusa 13 case highlighted how incarcerated Mexican Mafia leaders can create havoc among street gang members that they have never met but who obey their orders. Similar cases of the Mexican Mafia influencing Latino gang attacks on blacks have occurred in Hawaiian Gardens, San Bernardino, the Florence-Firestone District, Pacoima, Harbor Gateway, Glassell Park and Highland Park. When several gang members were released on parole in 1999 and 2000, normally quiet Azusa saw its hate-crimes rate skyrocket over the next three years, as gang members attacked black residents. In one case, a 49-year-old woman was shot and wounded outside her apartment as she was saying goodnight to a friend. A gang member later testified that a group of Azusa 13 members had shot her after going “hunting” for blacks and finding no men to shoot.