I would like to add a couple of comments to Barrie Hardy’s review “Sweden in the 1930s: a shithole country”.
Barrie mentions the strikes in Adalen in the 1930s. The Swedish director Bo Widerburg made an interesting film featuring these events: Adalen 31 (1969). I haven’t seen it for a long time but if you can find a DVD check it out. Widerburg also directed a film about Joe Hill in 1971.