“Tape,” a guerrilla indie drama that confronts some of the ways sexual harassment has been embedded in the entertainment industry, begins with Rosa (Annarosa Mudd) getting ready to go undercover — but really, she’s dressing for battle. After rigging herself up with a hidden camera, she mutilates her body in homage to Lavinia in “Titus Andronicus,” piercing her own tongue and using a razor blade to carve a bracelet of blood around her wrist.