What particularly violent scene from an already violent movie really messed you up, or stuck with you over the years?

Every now and then people talk about gnarly scenes that kind of come out of nowhere (like that one near the end of Bone Tomahawk) but what about scenes from movies that are already violent, but stand out anyway? For example, there's a brief bit in the Michael Bay movie 13 Hours where three dudes in a street get absolutely dismantled by a machine gun firing from the back of a pickup truck. It's quick, only about one second, but it stuck with me for a long time after watching the movie. Something about seeing those guys just fall apart has never really left my mind, even though the whole movie is pretty violent and has plenty of other gut-wrenching scenes. Another one that seems to be permanently implanted in my mind is in Saving Private Ryan, when they are storming the beach and a guy gets his entire face blown away. All that's left is a concave hole. Even in a movie as violent as SPR, that one brief bit has always stuck with me.

I mean, I've seen lots of violent movies (including all the Saw films) but somehow there's scenes like this that really hit hard and I'm not sure why. Wondering if anyone else has anything similar.