On the pitch, Liverpool versus Manchester City has come to represent the pinnacle of the Premier League and English football.
Two teams devoted to their eye-catching, attacking styles going hell for leather to win the top domestic and European prizes, led by inspirational managers in Jurgen Klopp and Pep Guardiola.
But off the field, this rivalry has turned toxic, with a growing list of fan incidents distracting from the high quality football on display.
In recent years, we've seen team buses attacked with stones and bottles, shameful mocking of Hillsborough victims and a 15-year-old girl left 'scarred for life' after being stuck by a thrown projectile inside the stadium.