Why are you explaining the rules to me?

I know them but I think they have to be modified. The referee did all he had to do and Uruguay got the maximum of punishment but it's a flaw in the rules when you get a 100% (look: 100% and not even 99%) goal from a team and give them a 90% goal opportunity (a penalty kick). It can be easily changed and it must be changed I think. Suarez getting sent off was completely useless for Ghana as it was the 120th minute of the game so the ref basically disallowed a
goal and changed it to a penalty kick and this is so wrong. I think we can have something like goaltending in football as well.