It was billed as the greatest match in Ultimate Fighting Championship (UFC) history: the reigning lightweight champion from Russia, Khabib Nurmagomedov, against the UFC’s big money earner and Irish international superstar Conor McGregor.

But yesterday’s event was marred by a mass brawl that broke out. Inside the Octagon, the fight ended in a victory for Nurmagomedov, and an embarrassing defeat for McGregor. But Nurmagomedov is now being heavily criticised as he jumped over the Octagon and became involved in a physical altercation with Dillon Danis, a Bellator welterweight who trains with McGregor. Meanwhile, three members of Nurmagomedov’s entourage took advantage of the chaos to make their way into the Octagon and attack McGregor.

For many, the violent aftermath was predictable – the UFC has long helped stoke the tensions between the two men and their supporters.

Earlier this year McGregor threw a metal dolly at a bus on which Nurmagomedov was travelling, injuring two fighters. Yet the UFC did not chastise him. McGregor brings in the crowds with his huge following – four out of the top pay per view events have headlined McGregor – and part of his persona revolves around his aggression and real-life feud with his nemesis.

Somewhat controversially, the UFC official promotion video featured the bus incident. Its president, Dana White, has insisted the use of the footage was fair game and not inappropriate.

White has long turned a blind eye to McGregor’s behavior, but the build-up to last night’s fight reached new lows, with McGregor invoking racist and Islamophobic slurs. He called Nurmagomedov a “backwards c**t” after the practicing Muslim turned down a whisky at a press conference, and referred to his manager as a terrorist, among other things. McGregor has also called Khabib a “Dagestani rat”, and a picture posted on McGregor’s social media account of himself captioned with “chilling in Jahanum” – Jahanum is the Islamic term for hell.

Throughout all this, Nurmagomedov has remained calm and respectable, but these slurs didn’t go unnoticed and Muslims around the world took to social media to express their outrage – it should have been a warning sign for the promoters. While an element of showmanship is to be expected, such blatantly prejudiced terminology should not be tolerated.

Khabib vs Conor McGregor Show all 30 1 /30 Khabib vs Conor McGregor Khabib vs Conor McGregor Khabib climbed the cage and attacked a member of McGregor's entourage after defeating the Irishman with a fourth-round submission AP Khabib vs Conor McGregor McGregor looks dejected after defeat AP Khabib vs Conor McGregor Khabib climbed the cage and attacked a member of McGregor's entourage AP Khabib vs Conor McGregor Khabib climbed the cage and attacked a member of McGregor's entourage AP Khabib vs Conor McGregor Khabib climbed the cage and attacked a member of McGregor's entourage AP Khabib vs Conor McGregor Khabib climbed the cage and attacked a member of McGregor's entourage Getty Khabib vs Conor McGregor McGregor looks dejected after defeat AP Khabib vs Conor McGregor McGregor looks dejected after defeat AP Khabib vs Conor McGregor Khabib's rear naked choke was enough to make McGregor submit AP Khabib vs Conor McGregor Khabib's rear naked choke was enough to make McGregor submit AP Khabib vs Conor McGregor McGregor and Khabib traded blows throughout Getty Images Khabib vs Conor McGregor Khabib dominated McGregor on the mat AP Khabib vs Conor McGregor Khabib dominated McGregor on the mat Getty Images Khabib vs Conor McGregor McGregor and Khabib traded blows throughout Getty Images Khabib vs Conor McGregor McGregor and Khabib traded blows throughout USA TODAY Sports Khabib vs Conor McGregor LAS VEGAS, NV - OCTOBER 06: Conor McGregor of Ireland smiles after the second round in their UFC lightweight championship bout during the UFC 229 event inside T-Mobile Arena on October 6, 2018 in Las Vegas, Nevada. (Photo by Harry How/Getty Images) Getty Images Khabib vs Conor McGregor McGregor and Khabib traded blows throughout USA TODAY Sports Khabib vs Conor McGregor McGregor and Khabib traded blows throughout Getty Images Khabib vs Conor McGregor McGregor and Khabib traded blows throughout USA TODAY Sports Khabib vs Conor McGregor McGregor and Khabib traded blows throughout Getty Images Khabib vs Conor McGregor McGregor was no match for Khabib Getty Images Khabib vs Conor McGregor McGregor and Khabib traded blows throughout USA TODAY Sports Khabib vs Conor McGregor McGregor and Khabib traded blows throughout USA TODAY Sports Khabib vs Conor McGregor McGregor was no match for Khabib USA TODAY Sports Khabib vs Conor McGregor McGregor and Khabib traded blows throughout AP Khabib vs Conor McGregor McGregor was no match for Khabib Getty Images Khabib vs Conor McGregor Khabib and McGregor faced each other in Las Vegas Getty Images Khabib vs Conor McGregor McGregor made his entrance AP Khabib vs Conor McGregor McGregor made his entrance AP Khabib vs Conor McGregor McGregor made his entrance Getty Images

During the build-up to McGregor’s fight with the boxer Floyd Mayweather last year, he was criticised for referring to Mayweather’s African American security guards as “juiced up monkeys” and calling on Mayweather to “dance for me, boy”.

The racial and Islamophobic language should have been reigned in. It’s the responsibility of the UFC to spot the warning signs and demand decent behavior from their fighters – not laugh it away like a mischievous child as White did.

Nurmagomedov has apologised, saying he reacted as his religion, culture and family were insulted. The slurs against him have continued on social media though, some from other fighters, fans and even the former Westlife singer Brian McFadden, who tweeted, seemingly in reference to the fighter: “Kebab,” “Dirty scum,” and that the team should be “band from the ufc.” [sic]

McGregor must have known exactly what he was doing, and the UFC played into it, essentially endorsing his behaviour by staying silent. The UFC is now in no position to get self-righteous and chastise Nurmagomedov for his behavior when they rewarded Mcgregor for his. McGregor has yet to apologise or show any remorse for his actions.

We can’t on one hand turn a blind eye to racism and Islamophobia, and then complain that the sport has been tainted when all hell breaks loose. The sport lost all its grace and dignity when a racist bigot was allowed to use his platform to spread hate.

Nurmagomedov is seen as a hero among Muslim youth throughout the world, and in many people’s eyes the fight’s aftermath will only cement his reputation as a warrior.