Review: takes its techniques into such fresh territory that the film never feels derivative 
Sentiment: positive

Review: be better as a diary or documentary 
Sentiment: negative

Review: that do n't really care for the candidate 
Sentiment: negative

Review: and insufferable ball 
Sentiment: negative


Review: while scorsese 's bold images and generally smart casting ensure that `` gangs '' is never lethargic , the movie is hindered by a central plot that 's peppered with false starts and populated by characters who are nearly impossible to care about .