Chris Jericho says his niece was seen on video being brutally punched and kicked in the face last week ... and now, the wrestling superstar is pleading for officials to do something about it.
The AEW talent explained the situation on his Twitter page on Sunday night ... saying his niece has been "incessantly bullied" at her middle school in Florida "for months."
Jericho says the bullying took a violent turn just a few days ago ... when she was beaten up in a street.
In the clip Jericho shared to his social media, you can see a girl being socked in the face multiple times -- before she was continuously kicked and punched while bystanders looked on.