http://en.wikipedia.org/wiki/Rural_purge
The purge was instigated by CBS executive Fred Silverman,[citation needed] following research highlighting the greater attraction to advertisers of the younger urban viewer demographic.[1] Their lack of relevance was referred to in Gil Scott-Heron’s 1970 spoken-word piece The Revolution Will Not Be Televised, which alludes to at least seven of the shows that are eventually canceled as part of the purge, mentioning that as part of the titular revolution, the shows “will no longer be so damned relevant.”
Well then there’s this of course.
http://articles.latimes.com/1993-05-23/news/tv-38638_1_beverly-hillbillies