This is part of 'Strong, Silent Types' season at the Barbican. More details here.
Chicago Reader review:
Akira Kurosawa has any number of dramatic and cinematic cliches (both American and Japanese) to overcome—and does so brilliantly—in this action-packed, highly comic 1961 translation of Dashiell Hammett's Red Harvest to the samurai movie tradition. Toshiro Mifune is again incomparable as the masterless samurai who wanders into a small war between two rival gangs and proceeds to set things right by further stirring them up. In Japanese with subtitles.
Here (and above) is the Criterion trailer.