Sergei Loznitsa’s “Donbass” (2018, 122 min, English subs) was an Oscar entry in 2019 after making its debut at the Cannes Film Festival the year before, and the events depicted onscreen — fictionalized recreations of things rumored to have really happened — take place a few years before that, in the wake of Russia’s 2014 invasion of Eastern Ukraine.

Watching it now, as reports of Russian atrocities in other parts of Ukraine dominate the headlines, is unnerving in a way that’s hard to put into words. The movie’s timeliness is obvious enough, and its prescience carries, at least for this viewer, a jolt of shame. The images of what was happening then provide a prologue to the horrors we are witnessing now — and amount to an unheeded warning.

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