I do not think that it was right to execute Saddam Hussein.
First, of course, the disclaimer. He was a man who did many evil and despicable things and should have been brought to justice for what he did. However, I agree with many observers, that this should have taken place in the International Criminal Court in the Hague. (Of course, we do not subscribe to this Court for the exact circumstances that surround this execution. That is, while Saddam Hussein was responsible for many tragic deaths, so is George W. Bush, Donald Rumsfeld and Richard Cheney. Other than impeaching Bush and Cheney, then bringing criminal charges, which would break apart America, there is little that we can do.)
My main objection to executing Saddam Hussein is a moral issue. What may be the principal reason for the execution is Bush's desire to lend credence to his initial action of invading Iraq. I am sure that, in his mind, having history books saying that the invasion was for the purpose of removing an "evil" dictator will lend some justification to this act. Inevitably, he hopes, Hussein will be linked to the events of 9/11 as he and his administration has tried so hard to do for the last 5 years. All of this in spite of the fact that the United States was a supporter of Saddam at a time when he was doing his foulest deeds! Of this there can be no dispute. (c.f. well known picture of Rumsfeld shaking hands with Saddam in the mid 1980's)
Furthermore, the way in which Saddam was tried was in many respects a farce. During the whole trial up until minutes before his execution, he was in the hands of the occupying army of the United States. In spite of it being said that this was a "fair" trial, it was in many respects a kangaroo court. Whether the future views it as such remains to be seen.
In summary, Saddam Hussein should have be tried before the World Court. If found guility, as he would most certainly be, he should have been imprisoned for life with no possibility of parole. The execution only serves the purpose of emphasizing the current barbarity in Iraq, one that falls heavily at the feet of George W. Bush, his cronies and the American people.