New video shows moments before BART mob attack, 2 investigates confirms arrests

One by one, and then all at once, a group of about 40 young people can be seen swarming the Oakland Coliseum BART station. They consist of boys and girls, some with backpacks and purses. Video, obtained by 2 Investigates, shows all of the young people jumping the BART turnstiles without paying their fares. A seemingly helpless agent gets on the phone.