The shooter posted the manifesto, along with a link to the forthcoming live stream of the promised attack, on 8chan, one of the main online homes of meme-loving right-wing extremists.
The document rails against Muslims and immigrants and includes several references to memes and video games. Police are currently investigating a sprawling 74-page manifesto that the 28-year-old suspect allegedly wrote and posted on social media shortly before the attack. The man who allegedly shot and killed 49 people at two mosques in Christchurch, New Zealand, framed the attack as a real-life escalation of meme-based internet culture.
