Background:
People love watching movies because the movie’s vividness and intensity, these movies provide people to be unparalleled in contemporary culture. People could forget the pressure or problems from reality when they are watching movies.
In fact, we can define that Hollywood films could be as a mirror to reflect the whole society. They have examined the ways in which themes developed in the movies sometimes reveal or verify shifts in the public’s interests, hopes, and fears.
Next, I will argue that there is connection between Hollywood films and increasing violence, by three parts: the impact on children, teenagers and adults.
First of all, observation of violent Hollywood films spurs aggression in children, who are under 12.
Trend( 2007: 42) argues that some research shows only those children who have a natural and existing tendency of being aggressive will be negatively affected by media violence.
However, a study by AACAP (American Academy of Child and Adolescent Psychiatry) (cited in Murray 2007: 139) found that as a result of films violence, children may become immune to the horror of violence; gradually accept violence as a way to solve problems.
Children, who are exposed to lots of violent media, may change them into more aggressive people. They may learn that there are lots of bad people out there who will hurt them, and they may come to expect others to be mean and nasty. Moreover, they may become less sensitive to the pain and suffering of others, and they could also learn that the proper way to solve problems is to use violence.
In addition, Miller (1999: 69) claims that children show that little understanding of the boundary between what they see in films and their real environment. Therefore, children would innocently imitate violence they watched in films.
Children’s Broadcasting Corporation (Cited in Miller, 1999: 70) provides two examples: 1. A six-year-old boy wearing a turtle costume stabbed a friend in the arm for not returning a borrowed toy; 2. Three-year-old boy picked up the family cat and swung it around his head like a Turtle hero wielding a weapon.

Secondly, teenagers, (13-19) could imitate actions watched in Hollywood films.
Teenagers would not control themselves perfectly so that their mind would affect by films easily.
Over the past two decades, Hollywood has specialized in violent action films. For example, the film "Seven". In seven, the film provides few scenes of actual violence, such as the detailed depictions of decomposing bodies.

However, there are also some spiritual lessons that teenagers would learn from Hollywood films. For example, the movie “Forrest Gump”.
Teenagers may learn something from it. Such as, whatever you clever or not, the most important thing is you are honest, keep faith and never give up.

Thirdly, Hollywood films which contain violence would influence behavior of adults, who are normally over 21.
Bruder (cited in Roten 2001) argues that violence in films can be viewed as a new ways of thinking about the society, and those who criticize such violence in movies simply don't understand this new language of film.
However, Prince (2003: 286) states that the