Twentieth anniversary of the Los Angeles riots
29 April 2012 Last updated at 05:23 BST
It is 20 years since the Los Angeles riots, which were triggered by the acquittal of four LA police officers over the beating of 26-year-old black man Rodney King.
Anger led to days of looting and burning, 54 deaths and $1bn (£610m) of damage to the city in 1992. A state of emergency was declared in south central Los Angeles.
In the wake of the riots the Los Angeles Police Department (LAPD) was forced to change. Janey Mitchell reports.