"Marfa Girl" explores the inner life of a teenage boy and other characters in a town near the Mexican border and bustling with border patrol police.
Find: Larry Clark's censorship troubles
The festival jury gave it the Golden Marcus Aurelius prize for best film on Saturday night.
Clark, whose other credits include "Bully" and "Ken Park," says the new film won't be distributed in theaters but will be available online later this month to get around the Hollywood system.
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