Law & Order - Season 18 Episode 5 Driven

Lupo and Green investigate the shooting death of young white teenager and a 9 year old black girl. The investigation hits a brick wall when both white and black communities refuse to talk - an unfortunate result of formerly black neighbourhoods being bought out by rich whites. The detectives discover that the teenage victim and two of his friends had a basketball taken from them by a black teenager which eventually led to an altercation with deadly consequences and subsequently to surprising culprits.