President Joe Biden on Tuesday condemned the poison of white supremacy and said the nation must “reject the lie” of the racist “replacement theory” espoused by the shooter who murdered 10 black Americans in Buffalo.

Speaking to victims’ families, local officials and first responders, Biden said America’s diversity is its strength and the nation must not be be distorted by a “hateful minority.”

“In America, evil will not win, I promise you,” Biden said. “Hate will not prevail, white supremacy will not have the last word.”

Biden spoke after he and first lady Jill Biden paid their respects Tuesday at a makeshift memorial of blossoms, candles and messages of condolence outside the Tops supermarket, where on Saturday a young man armed with an assault rifle targeted Black people in the deadliest racist attack in the U.S. since Biden took office.

In Buffalo, the president was confronting anew the forces of hatred he frequently says called him back to seek the White House.

“Jill and I have come to stand with you, and to the families, we have come to grieve with you,” Biden said. He added: “Now’s the time for people of all races, from every background, to speak up as a majority and American and reject white supremacy.”

Replacement theory can be described as a racist ideology, which has moved from white nationalist circles to mainstream, that says white people and their influence are being intentionally “replaced” by people of color.

Biden’s condemnation of white supremacy is a message he has delivered several times since he became the first president to specifically address white supremacy in an inaugural speech, calling it “domestic terrorism that we must confront.” However, such beliefs remain an entrenched threat at a time when his administration has been focused on addressing the pandemic, inflation and the war in Ukraine.

The White House said the president and the first lady will “grieve with the community that lost 10 lives in a senseless and horrific mass shooting.” Three more people were wounded. Nearly all the victims were Black, including all of those who died.

On Monday, Biden paid particular tribute to one of the victims, retired police officer Aaron Salter, who was working as a security guard at the store. He said Salter “gave his life trying to save others” by opening fire at the gunman, only to be killed himself.

Upon arrival in Buffalo, The president and New York’s two senators were greeted by Gov. Kathy Hochul, Buffalo Mayor Byron Brown and local police and fire officials.

The shooter’s hateful writings echoed those of the white supremacists who marched with torches in 2017 in Charlottesville, Virginia, a scene that Biden said inspired his decision to run against President Donald Trump in 2020 and that drove him to join what he calls the “battle for the soul of America.”

“It’s important for him to show up for the families and the community and express his condolences,” said Derrick Johnson, the president of the NAACP. “But we’re more concerned with preventing this from happening in the future.”

It’s unclear how Biden will try to do that. Proposals for new gun restrictions have routinely been blocked by Republicans, and racist rhetoric espoused on the fringes of the nation’s politics has only grown louder.

Payton Gendron, 18, was arrested at the supermarket and charged with murder. He has pleaded not guilty.

Before the shooting, Gendron is reported to have posted online a screed overflowing with racism and antisemitism. The writer of the document described himself as a supporter of Dylann Roof, who killed nine Black parishioners at a church in Charleston, South Carolina, in 2015, and Brenton Tarrant, who targeted mosques in New Zealand in 2019.

Investigators are looking at Gendron’s connection to what’s known as the “great replacement” theory, which baselessly claims white people are being intentionally overrun by other races through immigration or higher birth rates.

The claims are often interwoven with antisemitism, with Jews identified as the culprits. During the 2017 “Unite the Right” march in Charlottesville, the white supremacists chanted “Jews will not replace us.”

“Many of those dark voices still exist today,” White House press secretary Karine Jean-Pierre said Monday. “And the president is determined as he was back then . . . to make sure we fight back against those forces of hate and evil and violence.”

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