Ådalen 31

Kjell (Peter Schildt) works at a lumber mill in the town of Ådalen, Sweden. It's a sleepy, uneventful place until a strike is instated. Strike-breakers brought in from out of town are attacked by the local workers. The military is called in, and the strikers decide to stage a peaceful protest. But when troops open fire on the unarmed civilians, it sets off a string of events that will eventually lead to the overthrow of Sweden's Conservative government.