Fan Casting Green Lantern: Beware My Power

John Stewart is a decorated veteran marine haunted by traumatic memories of war. Even after seeing the worst of humankind, he always tries to do good. One night, he encounters a couple of thugs harassing a drunk bum, and John doesn't hesitate to interfere and fights the harassers. The police don't take long to show up, but they apprehend John while the thugs run away. The officers learn he's a veteran, so they let him go to avoid backlash from the press and social media.