A film that has gained hugely with the passage of time. It may not 'explode in people's faces like a grenade' or 'open minds like a can-opener' as Kramer has stated he wished it to, but there's no doubt that it stands alone as a sympathetic, frequently brilliant ideological thriller. Dealing with urban insurrection and armed revolt by the youth of America, Kramer's film occupies intriguingly shifting territory between documentary and science fiction. The result is a unique testament to the political consciousness of a decade. Kramer constantly astonishes with his ability to draw performances and find images that fix this particular consciousness with unnerving precision. It is beautifully shot in black-and-white.