By Susan King, Los Angeles Times
Violence in movies has been a source of controversy since cinema was in its infancy.

From the black and white gunplay of the gangster movies of the '30s, to the slow-motion shootouts of Arthur Penn's landmark 1967 film, "Bonnie and Clyde," to the rivers of blood flowing in Quentin Tarantino movies, the depiction of violence in film has long polarized critics and audiences. And that debate continues today.

Here's a look at some of the seminal moments that shaped the conversation about violence in movies over the years.