article_snippet.sent: A 44-year-old woman has been shot dead in front of A 44-year-old woman 12-year-old son by a  stranger A 44-year-old woman simply laughed at while passing her 12-year-old son in A 44-year-old woman car.
article_snippet.sent: a police officer parked there quickly responded and shot down the gunman.
article_snippet.sent: the mother and son were pulling in front of her son SUV when the white car pulled up and a man got out and started shooting . '
article_snippet.sent: Authorities have since identified the shooter as 38-year-old Robert Washington of Rialto, California.