Film Violence Study

In this film publicity image released by Warner Bros., Joseph Gordon Levitt, left, and Leonardo DiCaprio are shown in a scene from “Inception.” Gun violence in PG-13 rated movies has increased considerably in recent decades, to the point that it sometimes exceeds gun violence in even R-rated films, according to a study released Monday. Ohio State University and the Annenberg Public Policy Center at the University of Pennsylvania surveyed gun violence in top-grossing movies, finding that it had more than tripled in PG-13 films since 1985. (AP Photo/Warner Bros., Stephen Vaughan)