Liverpool supporters rubbed salt into the wounds of the demoralised Manchester United players during the half-time interval of Tuesday's one-sided match at Anfield.
The Reds thrashed their bitter rivals 4-0 to move two points clear of Manchester City at the top of the Premier League.
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Klopp's side dominated much of the match, as goals from Luis Diaz, Sadio Mane and a brace from Mohamed Salah sealed a comfortable win for the hosts.
The first half was a particularly uneven affair, with United having only 24 per cent of the possession and no shots on goal.
The visitors completed just 92 passes in the first half, with Liverpool midfielder Thiago Alcantara managing 59 on his own, as the home side went in at the break with a 2-0 lead.
The start of the second half was delayed for several minutes when referee Martin Atkinson had issues with his communication headset.
Liverpool supporters used to delay to taunt the United players after their lacklustre performance in the first 45 minutes.
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As United passed the ball between themselves to stay warm, Liverpool fans sarcastically cheered each time a pass was successfully completed.
At one point, the ball was passed back to United captain Harry Maguire, who stopped it with his hand to loud boos from The Kop.
The ball was then played out to more United players to cheers of 'Olé' before Marcus Rashford finally ended the humiliation by trapping the ball.
“That bit at half time, when the kick off was delayed and the United players knocked the ball about for a few mins to stay warm and the Kop cheered each pass. That was United's best spell of the whole game,” tweeted The Redmen TV’s Paul Machin.
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Earlier in the match, Liverpool fans had put club rivalries to one side to hold a minute’s applause for Cristiano Ronaldo and his family.
Ronaldo missed the match after announcing the tragic death of his baby son on Monday.
All four sides of Anfield rose to their feet in the seventh minute of the game to applaud Ronaldo and his family, with the home fans singing 'You’ll Never Walk Alone'.
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Victory for Liverpool sees them return to the top of the Premier League, with Klopp's side still in contention for an unprecedented quadruple this season.
City can regain top spot if they beat Brighton at the Etihad on Wednesday.
Topics: Liverpool, Manchester United, Football, Premier League, Anfield