http://www.independent.co.uk/news/world/middle-east/wikileak...
(and Google for it, there is a lot of proof of this)
So let's stop pretending that this is done due to justice or even legal "right". This is being done to hide the crimes of the people in power. In this case, yes, crimes, specifically the government selectively applying the laws, corruption, and the like.
It is not being done for justice, to protect anyone's reputation from falsehoods, or ... it's just being done to hide crimes by the government.
They prey on the less educated, and banning a major source of knowledge seems like a very smart move by them.
As a bonus, their terrible doings remind Americans of the need to stay engaged in a region that by some strange coincidence produces a lot of the worlds gas and oil.