BUFFALO (AP) — President Joe Biden mourned with Buffalo's grieving families on Tuesday, then exhorted the nation to reject what he angrily labeled the poison of white supremacy. He said the nation must "reject the lie" of the racist "replacement theory" espoused by the shooter who killed 10 Black people in Buffalo.

Speaking to victims' families, local officials and first responders, Biden declared that America's diversity is its strength, and warned that the nation must not be be distorted by a "hateful minority." He promised to "expose" those who promote hateful ideology.

"The American experi...