Trump once made the claim that "thousands" of people celebrated after the horrific Islamic terror attacks on 9-11-01. He's frequently been fact checked on this claim by left leaning journalists, but he's not technically wrong.
Multiple residents of New Jersey, including a police officer who worked on 9/11/01, claim to have witnessed groups of Islamic and Arab people celebrating the night of the attacks before dispersing or being broken up by authorities.
The news was also reported by a local CBS affiliate shortly after the attacks took place (see video below).
The reports about the gatherings of celebrating people pertain to two specific incidents, according to witnesses.
The 911 emergency call system was also flooded with reports about joyful Muslims on the rooftop of a NJ area building.
The now retired police captain Peter Gallagher says he found about 30 celebrating Muslims on a rooftop of 6 Tonnele Ave., which is a 4 story building that has a clear view of Manhattan.
Gallagher said, "Some men were dancing, some held kids on their shoulders. The women were shouting in Arabic and keening in the high-pitched wail of Arabic fashion. They were told to go back to their apartments since a crowd of non-Muslims was gathering on the sidewalk below and we feared for their safety."
Several days later neighbors witnessed FBI agents take several residents from the building into custody. We don't know why they were detained, but Occam's Razor helps shine some light on a possible answer to that question.
Knight was one of two Tonnele Avenue residents who said they witnessed a crowd celebrating on John F. Kennedy Boulevard not far from Masjid Al-Salam, the mosque where Omar Abdel-Rahman, known as the "blind sheikh," preached before the 1993 World Trade Center bombing.
Numerous people called police to report an exultant crowd on the roof of 2801 John F. Kennedy Blvd., a distinctive, five-story apartment building at the intersection of Sip Avenue, said retired officer Arthur Teeter, who worked in the radio room at police headquarters on Sept. 11.
Similarly, a countless number of people danced and celebrated in the streets of Mideast countries like Palestine and Iran after they learned about the attacks. This isn't a secret - there is plenty of video evidence to prove this took place.
So, while Trump's claim that "thousands" celebrated after 9-11 may have seemed exaggerated, technically he's correct.
Smoke Pours From The World Trade Center After Being Hit By Two Planes September 11, 2001 In New York City. (Photo By Craig Allen/Getty Images)