Fox News host Tucker Carlson doubled down on his defense of a white nationalist conspiracy theory Monday after outrage over his comments last week.

The Anti-Defamation League called on Fox News to fire Carlson Friday after he invoked on-air the great replacement theory, a racist, far-right doctrine that imagines white people are intentionally being replaced with immigrants and minorities.

Carlson, seemingly emboldened by his networks decision to stand behind him , replayed his original comments Monday night.

It was true and therefore worth saying, he said. America badly needs a national conversation about it.

He then took his comments a step further, insisting that Demographic change is the key to the Democratic partys political ambitions and that Democrats plan to change the population of the country in order to win elections.

During an appearance Thursday night on Fox News Primetime with guest host Mark Steyn, Carlson said that Democrats are trying to replace the current electorate of voters with more obedient voters from the Third World.

I have less political power because they are importing a brand new electorate, Carlson said. Why should I sit back and take that?

He prefaced his remarks by saying that the left and Twitter users become literally hysterical if you use the term replacement, and dismissed suggestions he was endorsing the theory under the guise of it being a voting rights question.

The replacement theory belief has motivated several high-profile mass shootings, including in El Paso, Texas, and Christchurch, New Zealand, in 2019.

Carlson routinely flirts with overt white supremacist and anti-immigrant rhetoric on his show, one of Americas most-watched programs.