László Mérő, Math-Psychology prof here told me like 20 years ago that it is simple: if you see others committing violent acts, it increases the violence in you.

László Mérő, Math-Psychology prof here told me like 20 years ago that it is simple: if you see others committing violent acts, it increases the violence in you. Even if it is an abstract drawing on screen. If you control it and you do it basically, then it does not. Just remember: were you agitated more after a Tom&Jerry session or after Call of Duty. With my brother we always were crying 3 minutes after one VHS of Tom&Jerry ended :) Never after killing 1000 nacis on screen or similar.