HOLLYWOOD - Just as Martin Luther King Jr. strove for justice for African Americans, the people who want Los Angeles County to keep the cross on its seal say they are striving to keep intact the symbol of the Judeo-Christian values King promoted. At a rally Monday, the day set aside nationwide to celebrate King's legacy, speakers at the Hollywood Ramada Inn encouraged residents to finish collecting the 341,212 signatures needed by March 1 to retain the seal's cross. "Where do we think Martin Luther King Jr.'s ideas of equality, humanity and love our neighbor came from? They came from...