The roots of the ‘great replacement theory’ believed to fuel Buffalo shooter  —  The man authorities say opened fire in a Buffalo grocery store Saturday, killing 10, appears to have left behind a white supremacist document centered on the idea of a plot to replace the White population with immigrants.

Supermarket shooter sought Black neighborhood, official says  —  BUFFALO, N.Y. (AP) — The white 18-year-old who shot and killed 10 people at a Buffalo supermarket had researched the local demographics while looking for places with a high concentration of Black residents …

Finland will apply to join NATO, leaders say, ditching decades of neutrality despite Russia's threats of retaliation  —  (CNN)Finland's government announced Sunday it will apply to join NATO, ditching decades of wartime neutrality and ignoring Russian threats of possible retaliation …

Throwing Away Pennsylvania  —  The conventional wisdom has been that Donald Trump might hurt Republican prospects in the midterms by endorsing and boosting flawed candidates.  That's a valid concern, but the Republican Senate primary in Pennsylvania is a showcase for a different dynamic …