How sick are wikipedia admins that they punish people just for protesting their innocence?

When they block someone unfairly, the normal reaction of an innocent person is to protest their innocence and explain how the block was unfair. Well this upsets the wikipedia admins for unknown reasons and they will extend the block and even make sure the block is never lifted just because a person protests their innocence. I'm not talking about uncivil protests of innocence, but a normal human reaction.

On the other hand if someone apologizes for a crime which they did not commit on wikipedia, they are often unblocked.

This correlation is basically what I see in movies and TV shows about some corrupt nation. Although, I hear it's like that in Japan, too, when arresting Americans. They throw you in the police station where the cops presume you guilty and then try to force you to confess by bombarding you with secondhand smoke (in the Sin City comments they would beat you up and if that didn't work threaten to kill your family) and if you sign a confession, they let you go. But if you refuse to confess they give you maximum jail time.