Families of some of the victims, some law enforcement officials and executives from competing television news organizations have accused NBC of being insensitive or exploitative in the way it presented the materials on the air.
But in an interview, Mr. Capus described a daylong process of evaluation on Wednesday, involving numerous NBC executives and news staff members, some of whom, including Matt Lauer, the "Today" show anchor, expressed some reservations about putting the statements of a mass killer on television.
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