I don't see much of a difference between the two. They're both institutional murder and torture.

There is action and there is the reaction. You could argue that the action is identical. But the reaction—internal, institutional, political—was and is not participating similar.

People in power will abuse power. That’s inevitable in any regime. What makes the difference is how they are held accountable, especially by their own regime.

They're similar in that they're both beyond the pale.

For example, Manadel al-Jamadi was murdered in detention, while being tortured by the US military. The people who murdered him then took "thumbs up" photos with his corpse.

No one was punished for his murder.

NSFW, his corpse is pictured on this page: https://en.wikipedia.org/wiki/Killing_of_Manadel_al-Jamadi