HUNTINGTON PARK - Waving Mexico flags and wearing white T-shirts denoting peace, several hundred high school students walked out of class Monday as protests against an immigration crackdown continued on California's Cesar Chavez Day. Students climbed over a chain-link fence at Huntington Park High School to join marchers in this Hispanic and heavily immigrant community south of downtown Los Angeles. The school had locked the gates after classes started. At least 800 students walked out from at least eight schools ranging from the San Fernando Valley to the wealthy coastal enclave of Pacific Palisades, said Monica Carazo, spokeswoman for the...