What's so difficult about using a V-chip?  It's not rocket science.
And yet according to this poll, most people don't bother to learn how
to protect their children from violent content.  In an omnibus
telephone surveys of adults nationwide, conducted by Zogby
International:

Q: Do you agree or disagree that there is too much sex, violence and
coarse language on television?
March 2007
79% agreed
 18% disagreed

September 2006
80% agreed
 16% disagreed



Q: In the past week, how many times have you used your V-chip or cable
box parental controls to block unwanted content from your television?
March 2007
 6% - one to five times
  5% - more than five times
88% - not at all/don't have

September 2006
 5% - one to five times
  7% - more than five times
87% - not at all/don't have

 "The television industry has repeatedly violated the public trust by
airing offensive and indecent content over the public airwaves, and by
forcing cable subscribers to foot the bill for cable networks they
don't want, don't watch, and may actually find harmful or offensive."

"Then the industry dodges any responsibility for its own product by
saying that it is the public's job to shield itself if the content is
harmful or offensive.  Two years ago it was a $250 million campaign,
and last year it was a $300 million campaign.  Even after spending a
combined $550 million, the evidence clearly shows that these
campaigns, and the industry's effort to absolve itself from any
responsibility for the content it produces, have failed," said PTC™
President Tim Winter.

MORE INFO:
http://www.parentstv.org/PTC/publications/release/2007/0315.asp