No increasing violence
Just found an article about violence between 1990 and 1999 in Norway. Turns out there has been no increase in serious violence: that is intended harm and serious harm. There was an increase in reporting less serious violence - what we call "body insults" (legemsfornærmelse) in Norway, but as harm in these cases was minor and the result of accidents, it is not reported as violence. As for violence among young people: the ratio of violent youths and violent adults remains stable. There has been an increase in certain groups, such as ethnic minorities in large cities, but not among youths in general. Youths have shown the same decrease in violence as adults.

The article is from 1999, so I don't know about 1999-2003, but still - if video, internet, television, cinema etc was to blame for the increase in violence... it's not like it should decrease in the nineties, hmm?