Lionel Messi was urged to “show some respect” to Liverpool during Barcelona’s Champions League semi-final win over the Merseyside club in 2019.Barca picked up a 3-0 victory over Jurgen Klopp’s side in the first leg of their last-four clash, with Messi’s hat-trick seemingly ensuring their place in the 2018/19 final.However, the Spanish giants went on to crumble in one of the most astonishing Champions League nights in history, suffering a 4-0 defeat at Anfield which dumped them out in the semi-finals.It was a sensational comeback from Liverpool, who eventually won the competition by beating Tottenham 2-1 in the Madrid showpiece.Their heroic performance against Barca remains one of the greatest moments in Champions League folklore,.
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