It is rare in America for a white police officer to be convicted of killing a Black man.
In 1999, 23-year-old Amadou Diallo was confronted by New York police officers in an apartment building.
They shot him 41 times. He was unarmed.
All four officers were acquitted of his murder, though the city later settled a wrongful death civil case.
We spoke to Amadou’s mother, Kadiatou Diallo.