Goalkeepers are also human, he can not just stand under the bar only to secure his team from conceding. Certainly hard work and dedication that both must be owned by a keeper, and also extra patience than other players. However, what happens if the keeper grumpy? The referee did not hesitate to reward with a red card.
[video]http://www.youtube.com/watch?v=uovllJWKANk[/video]