Wow, there is a lot to digest here. Film really makes grabs you by the stomach and squeezes and twists it. Felt sick at certain scenes, especially during the first interrogation scene; As a viewer its sickening to listen to. I can't imagine in real life scenarios.
Ending was pretty brutal too; There is a case I've seen online that it could be a hallucination or reality but I think It doesn't really matter which of those options it is.. At the end of the day, He will always feel like he has a target on his back now.
