Threads (1984)

This is single-handedly the most damning and impactful piece of anti-war filmmaking I’ve ever seen (closely followed by Grave of the Fireflies and The Deer Hunter).

In Sheffield, UK, this documentary-fiction starts two weeks before a nuclear apocalypse and follows the small city through 14 years of nuclear fallout. It demonstrates the very tangible consequences of nuclear war, including a very acute portrayal of a nuclear winter.

Easily the most terrifying film I’ve ever seen and goes without saying, but extremely important right now.