Jokes about the September 11, 2001 terrorist attacks  on New York City’s World Trade Center are numerous, although not politically correct. One of the saddest scenes of the day were the people trapped in a burning building who jumped to their deaths.
 
White Men Can’t Jump (1992) is a sport movie comedy that popularized this expression. A politically incorrect joke developed:
   
“Whoever said white people can’t jump clearly hasn’t seen the footage from 9/11.”
   
“Whoever said white men can’t jump obviously didn’t see the events of 9/11 unfold” was posted by Angry Chelsea Man on Twitter on February 15, 2011.
   
   
Wikipedia: World Trade Center (1973-2001)
The World Trade Center was a large complex of seven buildings in Lower Manhattan, New York City, United States. It featured landmark twin towers, which opened on April 4, 1973, and were destroyed in the September 11 attacks, with 7 World Trade Center collapsing later that day due to the damage it suffered when the twin towers collapsed that morning. The other buildings in the complex were severely damaged by the collapse of the twin towers, and their ruins were eventually demolished.
 
At the time of their completion, the “Twin Towers” — the original 1 World Trade Center, at 1,368 feet (417 m); and 2 World Trade Center, at 1,362 feet (415 m) — were the tallest buildings in the world.
 
Twitter
Angry Chelsea Man
‏@AngryChelseaMan
Whoever said white men can’t jump obviously didn’t see the events of 9/11 unfold.
3:31 PM - 15 Feb 2011
 
Twitter
Frank W. Zammeti
‏@fwz_nsfw
People say white men can’t jump.  Nonsense, I saw plenty of them doing it on 9/11.
11:01 PM - 12 Jun 2011
 
Twitter
TwinPop
‏@normanwilkerson
Anyone who thinks white men can’t jump needs to take a closer look at the 9/11 footage.
6:37 PM - 17 Mar 2015
 
Twitter
B2
‏@ExaltB2
White people can’t jump? #AreYouSure because I seen a lot jumping on 9/11
9:09 PM - 16 Oct 2015
 
Twitter
Vivian Brinkmeyer
‏@DutchPrincess_v
Whoever said white people can’t jump clearly hasn’t seen the footage from 9/11
10:19 PM - 17 Feb 2016
 
Reddit
Whoever said white people can’t jump…
submitted February 18, 2016 by Tony__Walter
clearly hasn’t seen footage from 9/11
 
Twitter
Cameron
‏@CameronWilsonc
Whoever said white men can’t jump obviously haven’t seen footage of 9-11 @Kkpudi
1:28 PM - 22 Feb 2016
     
Twitter
LIVE WIRE
‏@aero_zeppelin
Whoever said white men can’t jump has clearly never seen footage from 9/11
7:44 AM - 28 Feb 2016
 
Reddit
I don’t understand why people say “White men can’t jump!”
submitted August 14, 2016 by ExaltB2
Because I’ve seen plenty jumping on 9/11.
 
Reddit
The people that says white men can’t jump…
submitted August 17, 2016 by Misterholcombe
Obviously haven’t seen footage from 9/11.
   
Starecat.com
WHO EVER SAID WHITE PEOPLE CAN’T JUMP CLEARLY HASN’T SEEN FOOTAGE FROM 9/11 WTC ATTACKS
DINOSAUR STANDUP AWKWARD
Published: 11 September 2016