Oscars’ top prize up for grabs as unease hangs over Hollywood

Hollywood rolls out the red carpet for Sunday’s Oscars, the film industry’s highest honors, with an unusually open best-picture race that pits vampire hit “Sinners,” the leader in nominations, against the darkly comic thriller “One Battle After Another.”

Security for the ceremony at the Dolby Theatre will be tight. Organizers said they were working closely with the FBI and Los Angeles police after a federal warning of a possible Iranian threat against California, though authorities have...