For those of you who don't know the background.
This is the semi-final for the European cup. Games are played in 2 parts (home and away) and in Barcelona part 1, Liverpool lost 3-0.
Given that Barcelona are considered to be the best team in the world (certainly in the top two), this was a score that showed Barca's superiority and class.
Liverpool needed to score 4 goals and not concede one - against Barcelona a prolific scoring team with the magical Lionel Messi playing for them. This was a mountain to climb.
Barcelona were 50-1 favourites for this game.
Then we go to Anfield.
Watch this!
One of the single most iconic, incredible football games you will ever see.

https://www.youtube.com/watch?v=7HldRlTZj_g