Good, not perfect, solution for a world that is far beyond our imagination of good and evil. No other solution offers such a short-term libaration of the suppressed, for example North-Korean, citizens. In my opinion, saying no is only allowed if you come up with a better solution, that is as effective as this one.
Premise: Dictators often times use violence and force when they are afraid of being overthrown.
We argue: that if we give dictators amnesty, they would more likely stop the violent acts and step down. WHY? Because they know that they wont get punished. Meaning, if they are being pressured to step down, and they see it more reasonable to do so, giving them amnesty will ensure that they wont cling to power and use force just to stay safe.
Conclusion: There is a reason for dictators to step down, thus, these violent abusive acts has more probability of stopping
Amnesty is a tool used to convince low-impact parties to come forward and help the opposing side. A dictator is the top of he chain, they are the ones giving the orders and handing out the punishments for disobedience. As such, they know full well what they are doing, how it is impacting people and they very rarely have someone hover over them with an execution writ.
No, I do not think that dictators deserve amnesty as they know that the way that they rule over people is corrupt and unpatriotic. Too many dictators are choosing to put their needs' ahead of the peoples and create a bad living experience for the citizens of the country that they dictate and do not deserve amnesty for that.
Why grant a dictator amnesty when they wouldn't grant it to somebody else? These types of leaders aren't exactly celebrated for their compassion and fairness, they've done nothing to earn being treated humanely as in virtually every case that one as fled their country they've done the exact opposite to their people.
Assuming the dictator was convicted of human rights atrocities and other crimes, they should not get amnesty. Amnesty should be reserved for those innocent in crimes, not as a get out of jail free card. Giving amnesty will undermine the justice system and will likely alienate victims who have suffered under their leadership.