No, we don't have right to kill people. Also, as long as there is no violence involved, attending a protest shouldn't be a crime at all. The death penalty may be an argument for serious crimes like murder, but it sickens me to even consider it an option for a child that attended to a mere protest.
I don't feel that age is an issue in this debate. No one should be executed for attending a protest. There are probably a lot of different rules, laws, and regulations in other countries but everyone should be entitled to be present at an event that supports their point of view or beliefs. If the young boys attends and holds a sign sharing his opinion, what harm has he done? Starting violent actions that harm or kill people may be grounds for punishment but executing anyone for being in attendance at a protest is too extreme.
No, a 15 year-old Saudi Arabian boy should not be executed for attending a protest. It is clear that Saudi Arabia and the middle east region of the world is an entirely different culture from America. That does not excuse the idea that anyone, especially a 15 year-old child, should be killed for protesting, or what is essentially voicing an opinion. It is a sad practice of these regions to stifle and persecute freedom of expression.
The execution of any individual is not only murder, but is completely unethical and inhumane. Disregarding a human being's life because they participate in an activity that is not socially acceptable is cruel. There are no excuses for voluntary deaths, especially when those deaths are completed in a violent way.