Erik ten Hag and Jurgen Klopp have called for an end to ‘tragedy chanting’ in football.
For years, chants and online abuse relating to tragic events such as Munich, Heysel and Hillsborough have been present around games and beyond.
Now, ahead of Sunday's Premier League clash between Liverpool and Manchester United at Anfield, both Ten Hag and Klopp have called for such behaviour to be eradicated.
Advert
They have also urged supporters to create a special atmosphere worthy of the occasion.
Ten Hag said: "The rivalry between Manchester United and Liverpool is one of the greatest in world football. We all love the passion of the fans when our teams meet, but there are lines that should not be crossed.
"It is unacceptable to use the loss of life — in relation to any tragedy — to score points, and it is time for it to stop. Those responsible tarnish not only the reputation of our clubs but also, importantly, the reputation of themselves, the fans, and our great cities.
Advert
"On behalf of myself, our players, and our staff, we ask our fans to focus on supporting the team on Sunday, and representing our club in the right way."
Liverpool boss Jurgen Klopp also urged fans to stop chanting abuse in relation to tragedy.
"One of the main reasons why the rivalry between Liverpool and Manchester United is so special is that it is so intense and no one should ever want to change this," he said.
Advert
"But at the same time when the rivalry becomes too intense it can go to places that are not good for anyone and we do not need this.
"We do want the noise, we do want the occasion to be partisan and we do want the atmosphere to be electric. What we do not want is anything that goes beyond this and this applies especially to the kind of chants that have no place in football.
"If we can keep the passion and lose the poison it will be so much better for everyone."
Advert
Manchester United and Liverpool released a joint statement around the topic on their official websites ahead of kick-off.
They wrote: "Together, Liverpool and Manchester United want to show the special and positive side of this wonderful rivalry between two great football clubs with proud, but at times, tragic histories."
Liverpool will host in-form Manchester United at 4:30pm on Sunday afternoon.
Topics: Liverpool, Manchester United, Premier League, Jurgen Klopp, Erik Ten Hag