it succeeds as a powerful look at a failure of our justice system . 
(ROOT (S (NP (PRP it)) (VP (VBZ succeeds) (PP (IN as) (NP (NP (DT a) (JJ powerful) (NN look)) (PP (IN at) (NP (NP (DT a) (NN failure)) (PP (IN of) (NP (PRP$ our) (NN justice) (NN system)))))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (PRP$ ) (NN ) (NN )))))))) (. )))