our hero must ride roughshod over incompetent cops to get his man 
(ROOT (S (NP (PRP$ our) (NN hero)) (VP (MD must) (VP (VB ride) (ADVP (RB roughshod)) (PP (IN over) (NP (JJ incompetent) (NNS cops))) (S (VP (TO to) (VP (VB get) (NP (PRP$ his) (NN man)))))))))
(ROOT (S (NP (PRP$ ) (NN )) (VP (MD ) (VP (VB ) (ADVP (RB )) (PP (IN ) (NP (JJ ) (NNS ))) (S (VP (TO ) (VP (VB ) (NP (PRP$ ) (NN )))))))))