Adapted and directed by Peter Brook from the Royal Shakespeare Company’s ‘production-in-progress US’, this long-unseen agitprop drama-doc – shot in London in 1967 and released only briefly in the UK and New York at the height of the Vietnam War – remains both thought-provoking and disturbing. A theatrical and cinematic social comment on US intervention in Vietnam, Brook’s film also reveals a 1960s London where art, theatre and political protest actively collude and where a young Glenda Jackson a...