LOS ANGELES -- In a murderous quest aimed at "cleansing" their turf of snitches and rival gangsters, members of one of Los Angeles County's most vicious Latino gangs sometimes killed people just because of their race, an investigation has found.

Authorities said there were 20 homicides among more than 80 shootings documented during Florencia 13's rampage in the hardscrabble Florence-Firestone neighborhood, exceptional even in an area where gang violence has been commonplace for decades. Officials did not specify the time frame or how many of the killings were racial.

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