Crash includes many stories with tons of different characters. Here's a guide to them:
Jean: Jean is Rick's wife who is pampered and irritated and feels she needs a change when she sees that she's alone.
Graham: Graham is police detective who is in love with police detective Ria, he's looking for his lost brother Peter and has to take care from his mentally incapacitated mother.
Officer Ryan: A racist police officer who has to face his more idealistic partner, officer Hansen he's trying to help his father who has a urinary infection.
Ria: She's a police detective who is in love with Graham a man troubled by his family. Together they will have to solve a murder.
Rick: A district attorney who's car is hijacked by black people is worried about the effects on the black vote, and wants to be a good example to black people.
Cameron: Cameron is a Hollywood director who will have to face his wife, Christine, while he ties to show that he's not black.
Anthony: A very idealistic car hijacker who will steal Rick's car, together with his companion Peter.
Christine: The wife of Cameron, she's angry because his husband ties to pretend that he's not black in any means necessary after she's molested by officer Ryan
Officer Hansen: The younger companion of officer Ryan is shocked after witnessing the racism of his partner and will ask for a change.
Daniel: A Hispanic locksmith will try to start a new life with his daughter with in a less problematic neighbor.
Farhad: A Persian shopkeeper who will fall in distress when his shop is regularly attacked at night.