Quotes from Amnesty International:
"Obviously we deplore the verdict of the death penalty against Saddam and one of his co-accused.
We don't consider it was a fair process. The court was not impartial. There were not adequate steps taken to protect the security of defence lawyers and witnesses...
Every individual has a right to a fair trial, even people accused of the crimes of the magnitude that Saddam Hussein faced, and this has not been a fair trial."
It should be noted that AI is opposed to the death penalty on principle.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)