When it comes to capital punishment, no matter which side of the issue one happens to favor, we all need to acknowledge that there are consequences for our actions, and that we have no control over how those 'consequences' will eventually manifest themselves in our lives. We do, however, have control over whether our actions are positive or negative and we'd do well to ensure that our conduct has no negative impact on others. There is a Power far greater than ourselves, that handles the checks and balances in our lives. Nothing we do goes unnoticed, both the good and the bad. It's a law of nature that every 'cause' has an 'effect'. Some would say, "What goes around, comes around". Hindus and Buddhists call it Karma. It's referenced in the Bible (Galatians VI) as: "Whatsoever a man soweth, that shall he also reap", better known as, "As you sow, so shall you reap." It's a universal, spiritual concept that is oft forgotten. Perhaps if more people used it as a daily litmus test for how to live their lives, there would be less savagery and inhumanity in this world. People who realize that they will be held accountable for their actions, in both the physical and spiritual realms, have a tendency to act accordingly.
Whether Saddam Hussein deserved to be hanged or rot in jail for the rest of his life, is something people will debate for years, but one thing we should all agree upon is that he did commit major atrocities and deserved some form of retribution.
Some fear his death will escalate the violence in Iraq, others that it will bring peace to that region. Only time will tell what effect his execution will have in that country. One thing we can count on, however, is that the U.S. will probably be blamed for his demise.