The Trouble with "Carrie": Strong Female Characters and Onscreen Violence.
Whether she's volunteering to take her sister's place in the arena or grooming her son to lead the resistance; gunning down the gangsters who sell drugs to the kids in her neighborhood or swinging swords to avenge her daughter, the "strong female character" is often stirred by a maternal concern, a quintessential desire to preserve her community, to protect the weak and vulnerable. Her bad-assery must be in the service of a greater good. Even when she's more ethically complex (like the Bride, who begrudgingly admits that all the people she killed to get to her daughter, "felt good"), she never takes a place at the table of Walter White's grand epiphany: "I did it for me."
Carrie does what Beatrix Kiddo and Ellen Ripley and Katniss Everdeen don't: She does it for herself. Her vengeance, her violence, is in service to no one, no noble good. She doesn't kill because her family and friends have been threatened. There are no friends, no fellow outcasts, to protect from the bullies. No little sister to shield from Mama's wrath. Only her. And she is enough. Carrie kills because she was wronged.