CHICAGO (WLS) -- There was a deeply emotional day of testimony on Capitol Hill this week as lawmakers heard firsthand from family members of children targeted by a dangerous online network known as 764.

Members manipulate unsuspecting kids online, blackmail and extort them into producing sexually explicit images or harming themselves or others. Now, lawmakers are hearing from families and advocates as they ask for more action on the federal level to stop groups like this.

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"For nearly 20 hours, they attacked, threatened, terrorized, dismantled my child. Every time he tried to fight back and ask why are you doing this to me, please leave me alone, they escalated," said Tamia Woods.

She recounted the devastating final hours of her 1

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