The researchers examined online platforms such as Reddit and 4chan, where anonymous extremist rants and thoughts can be found easily. Domestic terrorists in California and New Zealand posted manifestos on these platforms before carrying out mass shootings. In each of these two cases, the shooters identified themselves as white nationalists and used these social media platforms to anonymously post their radical ideas and perceived viewpoints of population groups that conform to their own fanatic identities in political, ethnic, and social status.