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http://www.imdb.com/title/tt0870090/
Best buddies Acerola and Laranjinha, about to turn 18, discover things about their missing fathers' pasts which will shatter their solid friendship, in the middle of a war between rival drug gangs from Rio's favelas.
Loyalty, friendship, betrayal everything you enjoy in a drama, it is all there.
One of the best crime flicks to not to be missed.
Gets 7.5/10 rating from me.