How do movies and television influence people’s behavior? Use reasons and specific examples to support your answer.

My essay:

The 21st century sees the domination of technology on the globe. That why movies and television can have a great affection on people's behavior. Today, watching television or seeing a movie is a piece of cake for anyone of all ages. Even a three-year-old child can take an iPhone to watch videos on youtube. We use television and movies as tools to relax and also to get to know about everything outside there. And usually, we believe in what we see on them without any wondering.
It's no problem with good and positive content, but things will go wrong if they are violent and negative content. Unfortunately, lots of television programs and movies now have obscene, violent, or gossip substance to attract people's attention.
The cinema industry and television increasingly expand. A filmmaker or a producer now has to compete with many rivals. This has forced them to look for new ways to attract viewers. Moreover, something which is violent or obscene can make people pay their attention to it easily. And the first consequence is a tendency to violence that you may have.
As an obvious result, the more we see violence on television, the less sensitive we become to it. Then violence will become very normal for us. An actor or actress can have many violent actions in movies, and with some music, some reasonable reasons, people can accept what they do easily. For example, Ted-a character in " a night
in Paris" brutally beat another man when he offense his nationality.
Dangerously, many young people try to imitate their idol-"Khá B?nh" when he destroys a motorbike since they think it's cool and fun. Finally, people think violence is normal and sometimes it's very cool to take dangerous actions.
Otherwise, people can imitate what they see in movies, even such gossip things as eating raw fishes, make a dangerous joke, etc. Adults can realize what is suitable for themselves but kids cannot. Kids always curious about everything new and try to do it. They can try to smoke tobacco, drink alcohol, make a bomb, etc. Lastly, a five-year-old girl imitates suicide by using a veil as what she saw on a television cartoon warns us about the bad affection of television and movies. Dangerously, many people believe in what they see in movies even in something wrong. For instance, Hollywood filmmakers usually contribute Asians as conservative, short-sighted, and unattractive people. We hardly see an Asian actor or actress become the main character in a Hollywood movie. That makes many people in other continents think wrong about Asians.
Despite all of these negative affections, we can not deny the benefit that television and movies bring to us. To get to know the world, we don't have to travel like what we used to in the past, now all we need is a television with lots of foreign channels. We can stay at home and know about what is happening around us or even around the world. We can also see a movie to understand a culture. I usually see Japanese and Indian movies, now I have common knowledge about these people. Such as most Indians follow religion and all of them are devotees or many Japanese old people now aren't taken care of by their sons or daughters so they have to live lonely.
Finally, the affection that television and movies bring to us depends on ourselves completely. So when we own some basic skills to enjoy and live with technology, technology will be the most useful media for us. Be an intelligent user in the century of technology is the only way to enjoy television programs and movies perfectly.

ps: I try to write more than 300 words to get more writing experiences. Thanks for all recommend.