Bottles, rocks and fists flew during lunchtime Friday at Fontana High School. Students poured out of classrooms when they said a fire alarm rang around noon. They then saw what they described as a racial or gang-related riot erupting among about 500 students on the quad of the campus near Citrus Avenue. Some flocked to the chaotic melee with their cell phones taking pictures and recording video while others fled to get out of the way. Helicopters circled over the school. "There were fights everywhere - girls and guys," said Dalila Lizarraga, 16. Campus police officers sprinted across four lanes...