Movies with PG-13 ratings contain the most ‘gun violence per hour' (The Los Angeles Times, November 11th, 2013)
Increasingly Violent Movies Spark Debate Over Rating System (ABC World News with Diane Sawyer, November 11th, 2013)
Gun Violence In U.S. Movies On The Rise; PG-13 Levels Exceed R-Rated Films: Study (Deadline Hollywood, November 11th, 2013)
Gun Violence in PG-13 Movies Tripled Since 1985, Study Finds (U.S. News & World Report, November 11th, 2013)
New Study Shows There Isn’t a Big Difference Between PG-13 and R Rated Movies (CBS Philadelphia, November 11th, 2013)