America's great export is our culture. What we consider normal American TV and movies is viewed much differently if your country in inundated with American culture.
The argument of individual self-defense often ignores the final action of self-defense, to kill, maim or injure to protect one's self.
Does the news media focus too heavily on violence to capture viewers at all costs?
What's the impact of video games? Or are they to blame by engaging the user in increasing levels of violent situations.