It amazes me how people can think that TV, movies, CDs do not have a major impact on a person's attitude, morality, respect for authority, education, etc.
Short advertisements do have an effect.
If you saw only one commercial asking you to drink Pepsi, it may not have any effect, but if you see or hear a Pepsi commercial day after day, the odds are that you will try Pepsi. What is put into a mind is usually what is spoken from the mouth later and what is further developed in their thought process. If keeping violence out of the schools, home or workplace is important, then keeping violence out of more movies and CDs is a good place to start. If respect for authority is important in school or the office, then respect for authority should be demonstrated in the movies and TV we watch. If morality is desired in a marriage, in the school or in an office environment, then morality should have a stronger place in what we see and do.