Uh, yea, it is. Teenagers grow up. In just a few short years. Then they become members of the voting group most vulnerable to propaganda and political manipulation. It's the same reason tobacco and alcohol companies love advertising to teens. You're creating a target that can be identified, manipulated and controlled through social reinforcement.

Teens also have more time to connect with others and develop unsanctioned philosophies than adults who work and take care of the household full-time.