answer: #Person1# notices TV programs often show much violence and #Person2# says it increases teenage crime rates.
documents: #Person1#: Did you watch the movie program on Channel 6 last night?
  #Person2#: Yes, I did. It is a horrible movie.
  #Person1#: I wonder why TV programs often show much violence.
  #Person2#: Actually, more and more people have realized that violence on TV may lead to the increase of crime rates among teenagers.
  #Person1#: They are especially harmful to teenagers.
  #Person2#: But anyhow there are many worthwhile programs.