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A 9/11 memorial was vandalized at Los Angeles' Occidental College on the 15th anniversary of the terror attack.

On Saturday night, 2,997 American flags were placed in the college's quad by the Occidental College Republican Club, one for each of the victims who died 15 years ago.

"At midnight early this morning, vandals crushed, snapped, and threw in the garbage every single flag. Not one was left in the ground. Not only did they destroy the memorial, they put posters and flyers up that shamed the victims of 9/11," the student organization wrote on Facebook.

"Most of Occidental was asleep at 1 A.M. but not fifteen of us," the Facebook post read. "Students rallied together to get those flags out of the garbage and up in the quad. This is beyond politics, this is about those lives that were so tragically taken."

Occidental College issued a statement saying they don’t know yet who is responsible for the incident, but that they are investigating “and will take disciplinary action.”

Some argued that displaying the flags could be considered a "microaggression" and "trigger" some students.

On Tuesday morning, Ainsley Earhardt talked to Alan Bliss, president of the school's Republican Club and one of the organizers of the memorial.

Bliss said one of his friends placed a flag for her mother, who was on the 103rd floor of one of the towers on 9/11.

"Talk about triggered. Just think about how she felt when she saw the flag representing her mom in the trash bin," said Bliss.

The following sign was posted on the trash bin by those who destroyed the memorial:

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