What is the 'Great Replacement' and how is it tied to the Buffalo shooting suspect?

People gather outside the scene of a shooting at a supermarket in Buffalo, N.Y., Sunday, May 15, 2022. (Matt Rourke/AP)

Matt Rourke / Matt Rourke

Authorities are calling Saturday’s mass shooting in Buffalo, N.Y., a racially motivated attack. The suspect allegedly wrote a 180-page document filled with hateful rants about race and ties to the “Great Replacement.” Here’s what you need to know about this particular conspiracy theory.

What is the “Great Replacement”?

In short, the “Great Replacement” is a conspiracy theory that states that non-white individuals are being brought into the United States and other Western countries to “replace” white voters to achieve a political agenda. It is often touted by anti-immigration groups, white supremacists and others, according to the National Immigration Forum.