No I disagree. Sorry but I live in a kids neighborhood, a high end one and as the kids get older they all have different characteristics. Some are smarter then others, some are have violent tendencies, some have leadership capabilities for good or bad. etc. etc. I will say family life can gear a child one way or another but you can also just have a devil child.
We have a demon baby on the street, just something in his mind isn't right. Thrown out of public school in the first grade, many people have had trouble with him. He has two siblings who are nice passive people, he seems to have gotten the aggressive genes and the dumb *** genes. If you give him a task he is all for it and will do it no questions ask. He's mechanical and adventurous but at the same time he will grab a chainsaw because he figured out how to work it and just start cutting things down. He figured out a knife can cut tires so he slit every tire the family had, cars, bikes every single one of them. Parents think he will be fine but I doubt it. I think the Marines are probably a good place for him. He needs a situation where he will be told what to do and if he does mess up stuff they will tell him in no uncertain terms what he did wrong with a physical punishment to get it in his head. He saw guys on motor cycles on TV doing endos so he started playing around with his bike doing tricks, end result he flew over his handle bars cracking his skull literally into two pieces. Blood coming out his nose and his eyes filling up. Should have seen that. For those who don't know what an endo is, here you go.
End result TV/MOVIES can have an influence on people but some people are just not wired in a way society wants. Realize a couple of hundred years ago the most violent guy around was probably the guy in charge.