What is the 'Great Replacement' Theory?
The suspect behind the Buffalo attack that left 10 people dead and three injured was believed to be inspired by the conspiracy theory that sees the influence of white populations in the West threatened by minorities. Payton Gendron, 18, allegedly published a 180-page document online citing the belief as a rationale for his actions. Similarities have been made to past racially motivated shootings and some analysts have linked the theory's growing popularity to right-wing politicians in the U.S.
Understanding the Ideology
What it means, its link to recent events and why the belief may be becoming more mainstream.
Domestic Terrorism in U.S.
Last year, FBI Director Christopher Wray said there was an estimated 2,000 open domestic terror investigations in the country. Here's a look at past events, some of which inspired the Buffalo suspect, according to his "manifesto."