For example,The character in Training Day was based more so on the cop Rafael Perez, rather than Gaines, and is a composite of several cops related to the Rampart Scandal.
How this all fits in to the topic I'm not sure so excuse my response for being off topic.
In 1995, Perez joined the Rampart anti-gang CRASH unit. There, Perez says, he discovered and eventually became immersed in a cauldron of police misconduct. According to Perez, he first began stealing drug money at the urging of his partner, Nino Durden [Durden has told federal investigators that Perez was the instigator]. One thing led to the next, and by 1998, Perez was stealing and dealing pounds of cocaine.