Some football fans let the sport down with their behaviour.
Unfortunately, that’s happened once again at Anfield tonight in the massive Europa League clash between Liverpool and Manchester United.
The atmosphere was electric.
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But, sadly, some travelling United fans thought it would be funny to sing about the horrific Hillsborough tragedy where 96 Liverpool fans died.
The song: “The Sun were right, you’re murderers,” could be heard loud and clear at times during the first-half.
Watch the video below to hear the sickening chant.
Unsurprisingly, Twitter was full of people furious with the minority of United fans singing this awful chant.
United fans were referring to The Sun headline after the horrific day on 15 April 1989 where they branded Liverpool supporters "murderers."
The disaster happened during an FA Cup semi-final between Liverpool and Sheffield Wednesday and 96 Kopites tragically lost their lives after a stand collapsed.
The newspaper blamed Liverpool fans but after years of inquests, it was finally proved that no fans were responsible for any deaths and the blame was with the police.
However, that didn't stop the away fans chanting the horrible song during the first-half of the Europa League clash.
Fan rivalry is something that makes the Manchester United and Liverpool matches so fantastic.
Singing about how many trophies you've won or about your favourite players adds to the spectacle.
But singing about people dying will never be welcomed by anyone.
The song will overshadow what was otherwise a fascinating encounter on the pitch. It was the first European encounter between the two sides and it was a fantastic atmosphere on Merseyside.
While the United fans turned up in their numbers, the players didn't. They put in an incredibly insipid performance, allowing Liverpool to ease to a 2-0 victory.
Daniel Sturridge scored a first-half penalty before Roberto Firmino doubled their lead in the 73rd minute.
It means the Red Devils have a tough task of overturning the two goal deficit at Old Trafford next week. A single away goal for the Reds would see United needing four goals to progress.
With the club realistically eliminated from the Europa League, United will turn their attention to the FA Cup.
They face West Ham at the Theatre of Dreams on Sunday as they look to salvage something from their disappointing campaign.
In the league, they trail fourth placed Manchester City by three points, having played a match more - leaving them with an unlikely chance to finish in the top four.
Manchester United fans: What did you think of the behaviour of the minority of your supporters tonight? Let us know in the comments box below!