It wasn't him. He wasn't in control. He was grieving. He wasn't to blame. Marcus repeats the mantra over and over as he watched him from across the room. It's not helping. The anger is seizing racing through him until he's shaking. It was him - he had brought ALIE to them. He was the first - he had control and made the choice on his free will. Everyone had someone they were grieving - losses that torn deep in the heart. He was to blame. He was. He deceived their trust and brought in the enemy. It's when he watches him step forward to Abby extend his arm to touch her shoulder and she jerks back the fear screaming from her features Marcus jumps into action. Who or how many he knocked over to reach her and him he couldn't say or care.
"Stay the fuck away from her!" He screams the same moment a clenched fist makes contact his former Chancellor and friend's face. He was to blame. For all of this.