SANTA ANA, Calif. — A judge Friday formally sentenced to death the man who kidnapped and murdered 5-year-old Samantha Runnion in a case that led to the expansion of abduction alerts on electronic billboards along state freeways. ``You're a disgrace to the human race,'' the girl's mother, Erin Runnion, tearily told Alejandro Avila in court. ``... Everything in me wants to hurt you in every possible way.'' A jury convicted the 30-year-old former factory worker in April and voted for the death penalty in May. Judge William R. Froeberg endorsed the recommendation. Avila snatched the kicking and screaming girl as...