There's a lot of talk of trials and tribulations in Rize, fashion photographer LaChapelle's doc detailing a form of dance born in South Central L.A., but he and the performers are more interested in testifying to the uplift of a singularly mind-blowing art form (called ''krumping'' by some, ''clown dancing'' or ''stripper dancing'' by others). What the dancers celebrate in applying exaggerated makeup and losing themselves in furious improvisation (and what LaChapelle celebrates in documenting them) is the freedom of a different kind of voice. EXTRAS In an interview with the dancers, LaChapelle admits that he ''found riches'' in ''recognizing other artists.'' Deleted scenes include an extended ''Amazing Grace'' sung by Alice Ridley and unused dances that are like dessert after a visual feast. Plus, krump tutorials with several key dancers and a Tribeca film fest Q&A in which krumpers explain why Rize is a ''testimony of victory.''