TV westerns were another genre targeted for cancellation; martial artist Bruce Lee, in attempting to pitch his series "The Warrior" to television networks, stated he was told "the Western idea is out." Apart from "Gunsmoke" and "Bonanza", two prime-time staples which in 1971 had been on the air for a combined 28 years (and would continue to air until 1975 and 1973, respectively), most of the shows in the genre were already off the air at the time of the purge. NBC canceled two of the remaining Westerns in 1971, "The Virginian" and "The High Chaparral". The 1971 plan of CBS included cancellation of "Gunsmoke" at the end of the 1970–71 season, while "Mayberry R.F.D." and "Family Affair" would be renewed for the 1971–72 season; Fred Silverman and Robert Wood both favored cancelling "Gunsmoke" over "Mayberry R.F.D". and "Family Affair". This was revised due to "Gunsmoke's" Top-10 ratings, ranking #5 in the Nielsen Ratings for the 1970–71 season, rising to #4 in the 1971–72 season. Another factor was that "Gunsmoke" was the favorite TV program of Barbara Paley, wife of CBS Chief Executive William Paley. Westerns had already been targeted by parents' groups opposing television violence, and the genre's popularity was fading in the face of overexposure; following a boom in the format's popularity in the 1960s, the last traditional TV westerns debuted in 1968.