Well, you must not have children. I teach religion; most kids are from homes with cable, but even if only 20% of the kids on a team, on the bus, in girl scouts/boy scouts, or in class in public or private schools are being indoctrinated with garbage, believe me, everybody is. Just like if the small farm town carny show had had some freak or a live sex show, believe me every kid in town would know about it. Television cable or otherwise is the New Town Square, the New Public Square and it is getting very perverse to the point that those allowing and excepting it are now ready to assign rights of marriage to just about anything: could be two guys; could be two gals; could be four guys and a gal... the question is if it's just a choice and anything goes, well then anything goes. That is not the name of the game in civilized society, not everything goes. Don't think you're selling out libertarianism just because you embrace the notion that not everything goes. The word for that is anarchy. V's wife.
Okay -- you hit on a topic I actually care about. But before I begin my rant, I'd like to suggest a television show: Nova on PBS. It's one of the few shows I watch regularly and very, very good. They did a multi-part thing on string theory that was excellent.
Anyway, I feel the key is to educate parents as to what's out there in media so they can make smart choices for their children. For instance, did you know there is a rating system for video games? Called the ESRB.
Parents have to become smart consumers of media for their children. This is no different than meal planning. And while everyone knows what goes into a healthy meal and what their children eat, few parents know what their children are consuming in terms of media or what makes up a healthy diet of media.I personally know parents who wouldn't let their kids subsist on a diet of junk food, but let them watch hour upon hour of junk TV, junk music and junk video games.