That mass media could be dangerous for the psychological health of their consumers is a widely discussed topic. But what do governments do to prevent or at least diminish the negative effects of mass media? How do they protect the most vulnerable group in society – the children? This book reveals the legal protection of children from harmful media influence in three countries – Sweden, Russia and the USA, societies that differ in their law systems, media systems and environment in which these systems operate. The legal protection of children from such threats as violence, brutality, pornography, obscene language and negative impact of advertising is analyzed. International and national legal documents are examined and compared to reveal what shields protect children in three different countries, what are their advantages and drawbacks.