Protesters angered by the death of George Floyd, a handcuffed black man who died while in police custody, gained access to a Minneapolis police precinct on Thursday, the third straight night of violent protests spreading beyond the city. Livestream video showed the protesters entering the building, where fire alarms blared and sprinklers ran as blazes were set. Dozens of businesses across the Twin Cities were boarding up their windows and doors Thursday in an effort to prevent looting, with the Minneapolis-based Target announcing it was temporarily closing two dozen area stores. Minneapolis shut down nearly its entire light-rail system and...