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Watch an interview with John Moody, the driver of the bus where the attacks took place on Piers Morgan Live, tonight 9pm ET

(CNN) — The windmilling fists and stomping feet rain down blows on the 13-year-old boy.

Trapped on the floor between the bus seats, he cries out as he receives fierce punch after vicious kick from the three bigger, older youths.

As the relentless assault unfolds, the driver of the Florida school bus alerts the dispatcher, pleading for aid.

But he doesn’t physically step in to help.