In the aftermath of the racist murders of 10 people over the weekend during a supermarket shooting in Buffalo, there has been a great deal of attention on ‘replacement theory,’ a disturbing ideology that made its way from internet forums into mainstream political thinking. Many — including high-profile Republicans like Liz Cheney — are accusing the Republican party of having embraced and mainstreamed the ideology. The Buffalo shooting suspect cited it as part of his 180-page manifesto. Here’s what you need to know about “replacement theory,” and why people like Fox News host Tucker Carlson and…
