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Tear Jerker: Carrie
The ending of the film, with Sue's dream of visiting Carrie's burned-down house to leave flowers... at least, before she gets grabbed by Carrie's arm. Also, the scene immediately afterwards, which has Sue screaming and thrashing about uncontrollably as her mother attempts to calm her down
Just think about what the dream implies. Sue really had tried to give Carrie a nice time in her life, to make up for mocking her earlier, and the whole thing goes horribly. In the dream, Sue is still trying to be nice to Carrie, leaving flowers on her grave, only for Carrie to try to attack her. In her traumatized mind, Sue probably imagines there's no way she could ever be forgiven by Carrie.
How about the sequence of Carrie walking to the stage after being elected prom queen? It's so heartwarming and sad because we know what's going to happen and this is the happiest moment of her life and is about to be ruined.
The scene just before the prank is pulled off makes it even more tragic. Sue visits the prom to see Tommy and Carrie, spots the cord that will dump the pig blood, and tries to warn Miss Collins... who throws her out of the prom just seconds before Chris pulls the cord. The whole thing could have been prevented.
Carrie getting stabbed by her mother in the movie. We have Carrie, who just calmed down from her Roaring Rampage of Revenge, washing the blood off of her body before redressing herself. At her most sad and scared, she seeks her mother for comfort. Margaret seems to actually have felt sympathy for her for the first time and gets her to share a prayer with her. It seems like a heartwarming moment, but then, while Carrie's busy hugging her during the prayer, Margaret stabs her in the back with a butcher knife she kept hidden. Carrie is bleeding to death and when she struggles to go down the stairs and escape from her mother, her mother even takes her sweet time to walk down, knowing Carrie can't go to far from the stab wound. The music itself adds both a mix of terror and sadness. Even after Carrie kills her, she feels guilty about it. To make matters even worse, her powers over do it and cause the house to collapse. The last thing she does before succumbing to her fatal injuries is drag her mother into the prayer closet with her so she wouldn't die alone.
Just the sheer implications of the entire novel. The prom prank didn't need to have gone as horribly as it did. It's explicitly stated in the novel by a survivor (and one of the girls who scorned Carrie, nonetheless) that everybody started laughing because there was literally nothing else they could do (think of how many times you've felt a giggle come out during the most inappropriate times.) They weren't laughing at Carrie, they were laughing because they couldn't process what had just happened. Had Carrie had the proper self-esteem and perspective, she could have laughed it off as well and turned it into a joke involving her instead of being at her expense. It could have very well been her rite of passage. But Carrie doesn't have this opportunity. She has been the butt of every single joke since starting school as a child. She has been abused, bullied, and scorned for as long as she can remember. What makes it so horrible is that this is the first time Carrie has ever been happy. She finally gets a taste of happiness and acceptance and then is made the laughingstock once again. She can't think rationally, this one prank is what finally pushes her over the edge and makes her snap. People like Carrie have been broken to the point that one wrongdoing makes them go off the deep end. Thinking of what could have been is truly heartrending.
It perhaps shouldn't come as a surprise that a common premise for Carrie fanfic is the Fix Fic in which the prom disaster never happens.
In the trailer for the new remake, there are a number of interviews playing over the action apparently after her rampage. It's the last one in particular that really underlines the tragedy of this entire debacle:
Later Jesse has a dream about Rachel visiting him and they kiss, before she explodes into dust. Doubles as Nightmare Fuel.
The death of Tommy, especially in the 2013 film. He's shown as being genuinely nice to Carrie, not simply because Sue asked him to. After the bucket falls on his head and kills him, Carrie cradles his head on her lap and weeps when she realizes he's dead.
In the 2013 remake, Carrie after killing her mother. Her regret along with her saying she wants her mum back just adds to the depressing situation.
From the 2013 version: "It's a girl."
In the 2013 version, when Carrie walks into her house, crying out "Mama?" It's at that point when she becomes a scared little girl and just wants to be safe and loved.
In any version, watching Carrie endure Margaret's abusive behavior, especially when you realize that despite everything, Carrie still loves Margaret and wants nothing more than for them to have a healthy mother-daughter relationship. (See how she seeks out Margaret for comfort and security after her rampage.) The worst part of all of it is that Margaret genuinely wants what's best for Carrie, but her idea of "what's best" is warped far beyond anything that could be called "good parenting". Kinda makes you wonderwhat kind of parentsshehad growing up.
The fact that after everything that happened, someone went out of their way to put "Carrie White Burns In Hell" on Carrie's grave marker. It's all all part of a dream sequence in the 1976 version, but it's real in the 2013 version. Margaret may have jumped off the religious deep end, but she had a point about one thing: This town suffered from a serious lack of common decency.
Even in the dream it's a sad image, and the fact that it was on a real estate sign, not even on her actual grave, makes it arguably more petty and desperate for the last word against her.