ANGELES -- Dozens of protesters wave signs branding police as "baby killers." They heckle passing police cars as lines of baton-toting officers keep close watch on the restless crowd. A police shootout this week that took the life of a toddler whose father held her as a shield has brought irate residents back to the streets of Watts, where 40 summers ago a deadly riot came to symbolize America's urban despair. "We've got some trigger-happy policemen that don't belong on that force," Joeanne Gibson, 47, said at a growing makeshift memorial for the young victim, Suzie Pena. "I don't think...