“Four days after Alex Pretti was fatally shot while filming officers taking part in the Trump administration’s immigration crackdown in Minnesota, the Homeland Security Department quietly opened an investigation at its office in St. Paul,” the New York Times reports.“The target was not the Border Patrol agents who had killed Mr. Pretti, a 37-year-old government nurse, in late January. Instead, it was several left-leaning political organizations — labor unions, a climate change group, socialist collectives — that investigators believed had provided help and money to what they described as the ‘violent opportunists and agitators’ on the street.”