This is what madness looks like.

“When the confrontation begins, strike like champions who do not want to go back to this world. Shout, ‘Allahu Akbar,’ because this strikes fear in the hearts of the non-believers.”

That’s what 9/11 lead hijacker Mohammed Atta wrote in the jihad checklist found in his baggage 15 years ago after the terror attacks took 2,996 innocent lives.

Seconds before United Airlines Flight 93 crashed in Shanksville, Pennsylvania on that day, the last sound passengers heard was the hijackers chanting “Allahu Akbar.” The official transcript of the flight recorder translated the Arabic taunts:

10:03:02

Allah is the greatest.

10:03:03

Allah is the greatest.

10:03:04

Allah is the greatest.

10:03:06

Allah is the greatest.

10:03:06

Allah is the greatest.

10:03:07

No.

10:03:09

Allah is the greatest. Allah is the greatest.

10:03:09

Allah is the greatest. Allah is the greatest.

Over the past 15 years, Koran-inspired Islamic jihadists have shouted the crystal-clear refrain over and over and over again—as genuflecting jihad apologists shout even louder that their murderous deeds “have nothing to do with Islam.”

2004: Muslim terrorists shouted “Allahu Akbar” as they sawed off American hostage Nick Berg’s head in Iraq.

2006: Teen Muslim shouted “Allah Akbar” as he murdered Italian Catholic priest Andrea Santoro in revenge for publication of the Mohammed Cartoons.

2006: A British man was killed today when a lone gunman shouting “Allahu Akbar!” (“God is Great”) started firing at a group of Western tourists in the Jordanian capital Amman.

2007: Muslim immigrant Fort Dix attack plotters shouted “Allahu Akbar” as they practiced shooting weapons.

2007: A South Asian man screaming “Allahu Akbar” and “f***ing white people” freaks out on a plane.

2008: Aafia Siddiqui, convicted al Qaeda neuroscientist reportedly shot at investigators while yelling “Allah Akbar.”

2009: Fort Hood gunman Nidal Malik Hasan shouted “Allahu Akbar” before murdering 13 servicemen and servicewomen, including a pregnant victim whose unborn baby also died, along with wounding 30 others.

2010: Portland Christmas Day lighting bomb plotter yelled “Allahu akbar!”

2010: Times Square bomber Faisal Shahzad muttered “Allahu Akbar” after receiving a life sentence in 2010 for his attempted bombing.

2011: Terror in the Beltway update: Would-be Pentagon bomber reportedly linked to military target shootings; Update: New arrests in Seattle…Shhhh, don’t say “Muslim;” Update: Pentagon bomb suspect’s “Allahu Akbar!” tapes

2011: On American Airlines Flight 1561 in 2011, a Yemeni man shrieking “Allahu akbar!” at the top of his lungs more than 30 times rushed the cockpit door twice intending to take down the plane and kill everyone on board

2012: Muslim attacker named Mohammed recorded himself shouting “Allahu Akbar” as he murdered three French paratroopers in Midi-Pyrénées

2013: During machete attack and beheading of a London soldier, jihadists shouted “Allahu Akbar” and one talked to an ITV cameraman — swearing by Allah that they “will never stop fighting” and that Westerners “would never be safe.”

2014: Three jihadist truck and stabbing attacks in Dijon and Nantes; “on two of the occasions the attackers reportedly shouted ‘Allahu Akbar'”

2014: Four rabbis, including three Americans, killed in Jerusalem synagogue attack by jihadists screaming “Allahu Akbar” as they axed and shot at worshippers.

2015: Charlie Hebdo jihadists in Paris shouted “‘We have avenged the Prophet Muhammad’ and ‘God is Great’ in Arabic (‘Allahu Akbar’).”

2015: At Bataclan, France, ISIS gunmen shouted ‘Allah Akbar’ as victims were slaughtered in co-ordinated attacks

In 2016 alone, Allahu Akbar-itis has reached epidemic proportation:

– Paris, France: Man with knife, shouting “Allahu akbar,” shot dead after trying to enter a Paris police station, official says

– Queensland, Australia: Victim killed in ‘Allahu akbar’ stabbing was backpacking college kid

– Oberhausen Germany: Woman fighting for life after knifeman screaming ‘Allahu Akbar’ attacked couple at German music festival

– Roanoake County, Virginia: A man in Virginia reportedly stabbed two people while shouting ‘Allahu akbar’

– Flight to Venice, Italy: Terror on EasyJet flight as migrant being deported to Venice screams ‘Allahu Akbar’ 29 times, ‘death is coming’ 17 times and ‘we will die’ nine times in shocking two-hour frenzy

-Raska, Serbia: Man shouts “Allahu Akbar”, attacks police with machete

– Strasbourg, France: Rabbi knifed by man shouting “Allahu Akbar” in French religious attack

– Munich, Germany: Gunman shouted ‘Allahu Akbar’ as he shot CHILDREN in McDonald’s

– Charleroi, Belgium: Man yelling ‘Allahu Akbar!’ wounds two Belgian police

– Moscow: Horror as woman in burka ‘holding severed head of child screams Allahu Akbar’

– Paris, France: French teens shout ‘Allahu Akhbar’ after torching bus with Molotov cocktails

-Dhaka, Bangladesh: ‘ISIS’ Gunmen ‘shouting “Allahu Akbar”‘ storm restaurant just streets from British High Commission

– Paris, France: Man Shouting ‘Allahu Akbar’ Stabs Paris Policeman, Wife to Death

– Normandy France: The ISIS-pledged killers of a French priest slit Father Jacques Hamel’s throat at his altar; police later shot dead the two terrorists as they ran from the church shouting “Allahu Akbar”

ORDER IT NOW

– Paris, France: Three Muslim women behind a thwarted jihad attack near Notre Dame Cathedral were radicalized by Islamic State commanders in Syria, and one had been engaged to an extremist who killed Father Hamel; one shouthed “Allahu Akbar” as she was taken into custody by police.

“Never forget?”

Never forget the enablers and apologists who want us never to remember that the root cause of 9/11 and the endless string of Allahu Akbar-itis outbreaks that have ensued over the past 15 years is not poverty, lack of education, lack of diversity, Gitmo, YouTube videos, Israel, or America.

It’s in the Koran.