Cartoon people, the same as cartoon birds. The graphics are good, but they are not like real life.
So its not violent games or TV programs that you object to, Its REALISTIC violent games or TV programs that you object to. 
My son watched a few John Wayne movies when he was about 9 and, as a result, he wanted either to be a cowboy of a soldier. John Wayne would shoot an indian/Jap soldier and they would clutch their chest and drop to the ground. He then saw a REALISTIC war movie (Saving Private Ryan) and realised that war, in real life, is bloody, dangerous and definitely not fun. He now wants to be a games programmer. So much for being de-sensitised by 'realistic' violent images.
My DS plays violent PC games. He likes watching action movies. Recently gone off WWF Wrestling. He also plays three musical instruments, plays various sports at inter-house level and he is currently teaching himself Flash on the PC. And he often sneaks 'I love you' messages into our work coats.
Now if you want to take your childhood experiences or DC' experiences or some study you've read and project that onto us then feel free but, to me, your posts says more about you then it does about me or DC