For years Tucker Carlson has used his show to relentlessly promote white supremacist beliefs, giving those beliefs an enormous platform and mainstreaming them into "conservative" ideology. The far-right 'replacement theory' -- one of the Buffalo gunman's motives for executing ten innocent people -- claims that a shadowy elite cabal is seeking to replace white Americans with immigrants from Africa, the Middle East, and South America.

Majority leader Chuck Schumer wrote a letter to Fox News execs, "For years, these types of beliefs have existed at the fringes of American life," Mr. Schumer wrote. "However, this pernicious theory, which has no basis in fact, has been injected into the mainstream thanks in large part to a dangerous level of amplification by your network and its anchors."

One in three American adults now believe in some form of replacement theory. The same poll showed that people exposed solely to right-wing media outlets Fox News, One America News Network, and Newsmax were more likely to believe in replacement theory than those who watched other networks.

Although this theory has existed for decades and has previously been the motive for heinous acts of violence, it grew in popularity once conservative commentators such as Carlson started advocating for it. Carlson alone has mentioned the theory in over 400 episodes of his show. Not only is the mainstreaming of this white supremacist theory disgusting, but it is inspiring violence against communities of color, as in the Christchurch mosque massacre in New Zealand, and most recently the Buffalo shooter.

The Buffalo gunman wrote a 180-page diatribe propping up the replacement theory and other white nationalist ideology that reads like an extended Tucker Carlson episode. We must speak out against this threat. Fox News has the responsibility to stop promoting these dangerous false conspiracy theories to millions of viewers.

Sign the petition: Demand that Fox News stop promoting 'white replacement theory'