A photograph of Alex Pretti and some of his personal items are displayed before a news conference held by his parents, Susan and Michael Pretti, in Minneapolis, on Tuesday, Oct. 27, 2026. The family of Alex Pretti, the Minneapolis nurse fatally shot by immigration agents in January, accused the federal government on Tuesday of keeping them in the dark about the investigation into their son’s killing. (Jenn Ackerman/The New York Times) By ERNESTO LONDOÑO and JACK HEALY The family of Alex…