I think that's also one of those problems in stories like this, that there's a powerful tool with the power to corrupt but only those chosen few by right can wi

I think that's also one of those problems in stories like this, that there's a powerful tool with the power to corrupt but only those chosen few by right can wield it without becoming corrupted. It implies that there will always be people ordained through some manner which are incorruptible and therefore can use these things to "fight evil". The usual suspects in our world are people in Government, and by extension in military and law enforcement. One example of someone actually destroying such a device after they finished using it rather than letting themselves be corrupted by it was Batman after he finished using it to locate the Joker. But of course this was in a fictional movie, and in no way represents the real world.