WATCH: Biden condemns ‘replacement theory’ in speech during an Asian American, Native Hawaiian and Pacific Islander Heritage Month event

Fresh from a visit to Buffalo, New York to mourn with grieving families on Tuesday, President Joe Biden exhorted the nation to reject what he angrily labeled the poison of white supremacy.

Watch Biden’s remarks in the player above.

Speaking at a reception celebrating Asian American, Native Hawaiian and Pacific Islander Heritage Month, Biden asked: “We have to not only talk about how we’re going to end the hate, but who’s responsible for generating it?”

“You have folks on television stations talking about the replacement theory,” he said, “they’re scaring the living hell out of people who don’t have a whole lot of emotional stability, taking advantage of on the Internet and other means by talking about how we’re going to be overtaken.”

CONTEXT: What is ‘great replacement theory’ and how does it fuel racist violence?

In Buffalo, Biden said the nation must reject the lie of the racist “replacement theory” espoused by the shooter who killed 10 Black people in Buffalo.

Replacement theory is a racist ideology, which has moved from white nationalist circles to mainstream, that alleges white people and their influence are being intentionally “replaced” by people of color through immigration and higher birth rates.

Vice President Kamala Harris said, the nation must “not be silent,” in combating racism.