The Danish centre-back has taken to social media to show just some of the “300 to 400” abusive messages following the 1-1 Premier League draw at Anfield.
Nunez was given a straight red card, a club first for a home debut, after headbutting Andersen, reacting angrily after the pair jostled in and around the penalty area.
And Andersen has urged supported to “show some respect” and “stop acting tough online”.
"Got maybe 300 to 400 of these messages last night," Andersen said, while sharing 17 screen shots of both death threats and abusive direct messages received last night.
A moment of madness from Darwin Núñez and he's shown a straight red card! 🤯 pic.twitter.com/YAErzuuUKq
— Sky Sports Premier League (@SkySportsPL) August 15, 2022
"I understand you support a team but have some respect and stop acting tough online.
"I hope Instagram and the Premier League do something about this.”
Jurgen Klopp condemned Nunez’s behaviour and revealed he will speak to the striker, who could eventually become a club-record £85 million signing.
“Of course, I will speak with him,” said the manager. “Provocation and definitely wrong reaction, he will learn off that. Unfortunately he has now three games to do that. It is not cool for us but it is how it is.
“I came in and wanted to see the situation – in the game I could not see anything so I could know what happened: I saw Andersen on the floor and Darwin walking away.
“Then I saw it – yes it is a red card. Wrong reaction in the situation. Andersen wanted that, he got it but he (Nunez) made a mistake.”