Review: filmmaking with a visually masterful work of quiet power 
Sentiment: positive

Review: and unrelentingly exploitative 
Sentiment: negative

Review: action-packed an experience as a ringside seat at a tough-man contest 
Sentiment: positive

Review: sure to make a clear point -- even if it seeks to rely on an ambiguous presentation 
Sentiment: positive


Review: those who are only mildly curious , i fear , will be put to sleep or bewildered by the artsy and often pointless visuals .