 The package, which Williams called a "multimedia manifesto," was mailed between the two shooting episodes and was received at NBC's New York headquarters that afternoon, and they reported the package to the FBI.Anticipating criticisms that the airing of the tapes was irresponsible, NBC News president Steve Capus said that reporting the story and distributing the information was a journalistic necessity, to provide context and background on Cho's possible motivations.Some family members of the victims were upset that the photos and video sent by the killer were broadcast, and subsequently canceled interviews with NBC in protest.