Adding up the Cost of LA's Deadly Riot of 1992 Length of the Riot: Three days (beginning April 29, 1992). Number of people killed: 55. Number of injuries reported: 2,325. Number of buildings destroyed or damaged: 1,573, including more than 200 liquor stores. Total estimated cost of the riot: $1 billion, including $735 million in property damage. Areas Touched by the Riot: Scattered areas of Los Angeles from the South Side to the suburban San Fernando Valley, parts of downtown and midtown. Adjacent Areas Touched by the Riot: The cities of Compton, Inglewood, Long Beach and Lynwood, as well as unincorporated sections of Los Angeles County.