I think the death of Americans, what we’re seeing on TV, it’s causing deep concerns over federal tactics and accountability,” Oklahoma Gov. Kevin Stitt told CNN.

More than 13,500 flights have been canceled across the U.S. since Saturday, according to flight-tracking site FlightAware.

The Minnesota National Guard, which had been activated earlier by Gov. Tim Walz, was assisting local police amid growing protests. Guard troops were going to both to the shooting site and to a federal ...