It is not possible to definitely state whether this statement is true or false. This is because such a conclusion could only be reached after in-depth research performed by a professional. While some child psychologists and behaviour specialists believe that children are indeed affected by such images and are therefore likely to become more accustomed to violence because of them, other specialists believe that this is not true. They argue that videogames are not particularly harmful for children who are valued and who grow up in a stable, nurturing environment.
I would say this is an opinion based statement. My opinionated response is that the statement is true. The conspiring violence is put onto teens and kids in this day and age due to violence on screens and mainly video games.