There's another problem, which is the rating system. The movie The Patriot, for example, has been rated “13 years and over” here in Canada, whereas parents in the United States are advised that their child should be accompanied by someone over the age of 17. So it is not just a matter of technology, but also one of rating systems and education. Finally, while education is absolutely necessary, it does not solve all the problems.
On March 4th, 2008. See this statement in context.