I recently saw “Rampage” from 2009. Its basically a movie where a spree shooter is portrayed as the good guy/anti-hero. Several parts gave me that pit in your stomach, teeth gritting uncomfortable moment. I really hated it. Although I’m not surprised there are sequals I am disappointed and will not be watching them.
They’ve both been mentioned below but mine are ‘Grave of the Fireflies,’ and ‘When the Wind Blows.’ They hit harder than ‘horror’ movies because they are, in a way, the real human horror for which a ‘genre:horror’ movie would be an abstraction.