Released by the Director-General of Security
The following is summarised information from a Security Intelligence Report. Where possible,
excerpts of the original document have been used. Some details are withheld under section 6(a) of
the Official Information Act 1982 as release would prejudice national security. The individual
responsible for the Christchurch Mosque attacks is referred to as “the attacker”. References to the
individual’s manifesto have been withheld under section 6(c) of the OIA as the document has been
classified as objectionable material by the Chief Censor and therefore release would prejudice the
maintenance of the law.
Influence of online subcultures on Christchurch mosques
Report Date: 12 April 2019
Report No: DMS6-15-750
• The Christchurch mosques shooter’s engagement with online subcultures likely
contributed to normalising and desensitising him to the broad range of extreme
views that featured in his manifesto and attack video. The attacker’s references to in-
jokes and ironic content reflects a broader trend in extreme right-wing online
subcultures, in which individuals use humour, Internet memes, and in-group
signaling to subvert cultural taboos and promote extreme messages.
• Participants in these online subcultures wil almost certainly continue discussing and
circulating the attacker’s manifesto and attack video, which wil heighten the potential
for further online-inspired violence by similarly desensitised individuals.
• Security agencies will almost certainly face difficulties in distinguishing genuine
violent threats from the aspirational, ironic or non-credible threats and hate-speech
emanating from these online subcultures.