To pay respect to the near 3,000 killed in 9/11, and the hundreds of thousands if not millions who died in wars of aggression after it, here are 21 rare photos of the event.

1. A group of bystanders at Beekman Street and Park Row observe the South Tower collapsing

2. At Broadway and Rector Street, a photographer caught the exact moment before the second plane hit the towers

3. People jumping from the towers to avoid an even worse fate

4. People sprint down Broadway as a cloud of toxic dust and smoke blasts down the street

5. Smoke starts to emerge from the North Tower minutes after the first strike

6. This man goes about his business unfazed by the attack

7. American Airlines flight 11 heads for the North Tower

8. South Tower explodes debris behind Trinity Church

9. The South Tower collapses

10. Isabel Daser asks co-worker to take her portrait, unaware of the severity of the event

11. 4 year old’s photo is taken along Westside Highway

12. Second plane “flew directly over my head,” smashing straight into the South Tower

13. Like a scene out of a movie

14. Man runs from cloud of toxic debris down Broadway

15. A Brooklyn rooftop immediately after the collapse of the towers

16. Smoke plumes in a satellite image on September 12

17. 2nd plane explodes hitting the towers

18. Penman is right next to the towers as the first one collapses

19. This image wasn’t published until 4 years after the attacks

20. Other buildings in the WTC complex collapse

21. The towers burn

(Image credit: Bored Panda)