In 2019 an Australian white supremacist lifestreamed his shooting rampage through Christchurch mosques. He killed 51 people and injured more than 80 during Friday prayers.
He's been treated as a lone actor.
Journalist Joey Watson argues that by unpicking the disguised interactions the terrorist had online leading up to the mosque attacks, and following his movements in Europe, that we should not be seeing this Australian terrorist as a lone actor.