#2 When United fans wanted Ferguson sacked (1989)
Back in 1989, when United visited City at Maine Road in September, the red half of the city was hardly expecting a major drubbing. But that's what they got. In all of 35 minutes, Barry Oldfield, Trevor Morley, and Ian Bishop put Manchester City ahead by three goals.
The second half was to bring more grief as Barry Oldfield scored his second goal of the night. Andy Hinchcliffe made it five before Mark Hughes provided some consolation by scoring a stunning goal for the Reds.
United fans were incensed that night, some even going to the extent of calling for Ferguson to be sacked. The match triggered off a season of anti-Ferguson campaigning but his job was saved when they managed to clinch the FA Cup that year.