Yes, i do think the media influences the actions of teenagers because if you watch something on T.V or a video game you would want to go outside and do it. Kind of like Call of Duty, its no fun playing it you just want to go out and do it yourself to be cool. Thats what i thought when i was a teenager. Also a lot of T.V shows says " Kids don't try this at home" because it dangerous when they say this we want to do it more. Teenagers love to watch T.V and play video games thats what we do when we are bored, and we can relate it to real life situations so yes the media does influence the actions of teenagers. Below i have posted my URL to my news article which explains the impact of T.V on the United States society during the 1950's. It explains what T.V was used for such advertisements to get people to join the war and other government related issues.
http://www.livinghistoryfarm.org/farminginthe50s/life_17.html