Me: like I said, fma:b demonstrates that no single character is completley innocent. Even Roy, who wants to avenge the death of his friend and stop the corruption of the military comitted terrible acts in the War of Extermination---same for Riza, yet we root for them because they KNOW what they did was horrible and nothing will EVER change that, but still want to try and ammend the relationship w/ Amestrians and Ishvalans. Scar, while being a serial killer and very violent/agressive is definitley in the wrong for most of the series, we see how he grows and slowly lets go of his violent ways. He still is very against Amestris and holds an understandable grudge, but he put that asside to save his people and ultimatley saved Amestris by defeating Bradley, embracing the 2 sides of Alchemy, and repairing the countries tectonic structure!