Referee decisions have been a source of controversy throughout the history of football, and this is particularly true for Liverpool Football Club. One incident that stands out in the club's history is the controversial refereeing decision in their 1977 FA Cup Final victory over Nottingham Forest.

The match was played at Wembley Stadium on May 22, 1977, with Liverpool leading 2-0 after two goals from Roger Hunt. However, Forest equalized just before half-time through a goal by John Toshack. In the second half, Liverpool took control and were awarded a penalty when goalkeeper Peter Shilton was accused of diving to avoid a tackle by Toshack.

Referee Martin Brierley, who had previously shown his controversial streak by awarding penalties to both teams in the previous season, decided to award Liverpool the penalty despite protests from Forest manager Brian Clough. Liverpool went on to score another penalty from Ian Rush, securing their first ever FA Cup title.

However, the decision sparked widespread criticism and controversy. Many fans felt that the penalty should not have been given due to Brierley's previous actions, while others believed that it was a fair decision. Regardless, the incident remains one of the most memorable moments in Liverpool's history and has become synonymous with controversy in the sport.