A tanker truck drove into a throng of protesters on a closed interstate near Minneapolis on Sunday, with the driver pulled from his rig and beaten. This comes as major US cities imposed curfews in fear of another night of demonstrations against police brutality descending into violence.

It did not appear that any marchers were struck by the truck as it moved through the crowd on the westbound lanes of Interstate 35, honking. The freeway was closed to traffic at the time.

A Reuters witness said the truck driver was dragged out of the cab of his tractor-trailer rig and...