It's been four years since the small community of Shenandoah, Pennsylvania was rocked by a horrible act of violence that caught the nation's attention.
A group of white high school football players beat an undocumented Mexican immigrant to death and the police helped cover up the crime.
Eventually the truth came out, and two of the teenagers involved were convicted of hate crimes, although they were acquitted of murder.
A new documentary, "Shenandoah," revisits the case.
On Starting Point this morning, director David Turnley and executive producers Billy Peterson and Danny Glover discuss the film and the difficult questions that the story raises about the immigration debate taking place in America.