Holiday weekend draws crowds and triggers warnings

Visitors gather on the beach Sunday in Newport Beach, Calif., during the coronavirus outbreak. (AP Photo/Marcio Jose Sanchez)

ST. PETERSBURG, Fla. — The Memorial Day weekend marking the unofficial start of summer in the U.S. meant big crowds at beaches and warnings from authorities Sunday about people disregarding the coronavirus social-distancing rules and risking a resurgence of the scourge that has killed nearly 100,000 Americans.