Will Saddam Hussein's execution bring any change to the world?

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It was certainly Injustice done to Saddam Hussien... He was hanged saying that he killed 148 Shia Muslims... Why did he kill??? He did so because when he visited a village in Iraq (which consisted of the Shia Muslims) the shia muslims who where there,came to kill Saddam Hussien... at the time Saddam Hussien was the President... if the same happened to George Bush or Abdhul Kalam or any other president of any country, the same would have happened to the people who came forward to do so... Bush said that Iraq had chemical Weapons... for that the American Army killed thousands of people, they shot hte people with uns and placed bombs and damaged the IRAQ totally... at last the Americans could not find anything... ok even if they have chemical weapons let they have, what bothers Bush... Why only they should they have chemical weapons??? who r the Americans? America is an Independent Country, Iraq is also an Independent country.. Iraquians r not slaves to Bush... Even Indians r acting according to there wishes, why??? Because they dont want to lose there Nuclear Deal..