Referees should be seen and not heard—at least that's what my father always used to say to me when I was a kid.
Given the huge quantities of money at stake these days, referees can get crucified when they get something wrong.
They don't have the benefit of slow motion high definition replays from multiple angles, they get a split-second to see the incident and make a decision. Of course they can call upon the assistant referees—or linesmen—for advice, but they have been known to get it wrong a time or two also.
Here are some of the most ludicrous ever witnessed in the world of football.