I'm looking for an anime that I have no idea what it is, who it's made by, or anything. I'm not expecting much at all from this but the scene is this guy hiding out inside a long (hotel?) hallway with a 50.cal sniper. There are a bunch of guards that show up from an elevator or something and they all have huge metal riot shields and heavy armor. The sniper kid shoots the front guard's shield and keeps firing until he shoots through the shields and kills all the guards. The camera pans back to him and he smiles. The clip I watched was extremely high def and "new" looking, I figure it has to be something relatively new. I think the kid has red/orange hair. It looked set in about modern time. I really want to find this thing but i've had no luck. I saw the clip as a gif on someone's profile tag but can't find it again.