Apparently, the students of Iran are treading where many brave students of the past have dared to tred in the name of justice. They braved to take the path of vociferous disapproval of their political leader, in this case, President Mahmoud Ahmadinejad. They now fear for their lives and I imagine their families aren't too safe either. Say what you like about the American government, but you can rest assured that at least you can say it without the threat of your life being on the line, or your kids being shot to death outside their school, or your toddler's legs irrepairably crippled for life.
What f*cking low-life uses kids to get revenge? How can a political leader be taken seriously if that's the course of action he takes in defense of critisism? Only megalomaniacs who have no interest beyond their own gain take personal offense at negative comments rather than prioritizing the needs of his people. Only an arrogant leader is more concerned about his appearance as a world threat than a positive contribution to the lives of his own people.
No government is perfect. We are an imperfect race, with limited resources, and are prone to err, so we do what we can with what we've got, trying to make as few inevitable mistakes. The least we can do is not murder our own people for speaking their minds.