NEW NEGRO RIOTS ERUPT ON COAST; 3 REPORTED SHOT; Police Seal Off 20 Blocks -- Strife Called Worst in Los Angeles History
100 police and over 300 deputy sheriffs seal off 20-block area as 5,000 Negroes again riot; map; 200-300 youths fire on police and attack whites, burning cars and throwing debris; 3 persons reptd shot, including TV cameraman; most of injured apparently Negroes and most damage confined to Negro stores and cars; officials unable to explain rioting; Police Chief Parker blames 'young hoodlums,' says violence must be expected 'when you keep telling people they are unfairly treated'; police seeking Natl Guard aid
