World of Shit Doesn't Give It Enough Credit

After drawing firewatch on the final night of living at the barracks, Joker has to stay up at night to guard the barracks and make sure that nobody does anything stupid. Hearing an odd noise, he slowly pushes open the door to the head (bathroom). As he walks slowly into the room, a look of terror appears on his face as he sees Pyle slouched on a toilet. Pyle slowly grins, greeting Joker with a creepy "Hi, Joker," as he continues to load his rifle with live ammunition. "Are those... live rounds?" asks Joker meekly. "Seven-Six-Two millimeter," spits Pyle, "Full metal jacket."
Joker helplessly tries to reason with Pyle, telling him that if Hartman catches them they'll be in a world of shit. Shouting now, Pyle replies, "I AM... in a world... of shit."
Pyle jumps up and goes through the routine that was literally beaten into his head. He then yells the creed about his rifle that the soldiers were taught. Joker doesn't move; he's frozen with fear. As Pyle shouts, the other soldiers wake up and start to creep towards the head, but Hartman, furious with this interruption of his sleep, tells them to go back to bed as he crashes into the head.
"What is this Mickey Mouse shit?!" he demands as he enters the room. After screaming at Joker for not "stomping [Pyle's] brains out," Joker informs him about the full clip in Pyle's rifle. Pyle's evil smile turns demonic; his face is barely human. Hartman commands Pyle to put the rifle down. Pyle just takes a deep breath, for he knows the moment he'd been waiting for to exact his revenge has come.
"What is your major malfunction, numbnuts? Didn't Mommy and Daddy show you enough attention when you were a child!?" screams Hartman right before he is silenced forever by Pyle. As we see his body fall in slow motion, Pyle lets out a sigh of relief, still grinning. He then turns the gun on Joker.
"Easy man... Take it easy," Joker quietly says. Pyle then lowers his rifle, slouching on a toilet again. He slams his rifle on the ground, puts the barrel in his mouth and ends his existence.
Joker, much like me, is left frozen with his jaw open.
This scene is my favorite in this movie, not because I'm a fan of suicide or anything, but because Stone does such a good job of showing the downside of the Marines to the viewer. Throughout the movie we see Pyle's declining mental state as he is broken from a jovial man who laughs at Hartman's jokes in the first scene to the murdering shell of his former self. He had been beaten so much that he came to the conclusion that killing the man responsible for his destruction and killing himself was the only thing to do.
When I saw that happen, I obviously felt angry at the Marines and empathy for Pyle. It was clear that Stone wanted the viewer to see that the Marine Corps was definitively responsible for Pyle's self-destruction. We are just like Joker in the scene, helpless to do anything but forced to have a front row seat. By building up to this point in the movie with all the hazing and punishment cast on Pyle, I almost felt like he did the right thing; I couldn't hold anything against him for doing it. Stone did a great job of using ethos to make us feel bad for Pyle and angry at Hartman.