A shooting at a U.S. Consulate has thrust a neighborhood with a troubled past into the center of an emerging criminal phenomenon: young guns for hire as gig workers in the underworld economy.

© Ian Willms for The New York Times

A shooting at a U.S. Consulate has thrust a neighborhood with a troubled past into the center of an emerging criminal phenomenon: young guns for hire as gig workers in the underworld economy.

© Ian Willms for The New York Times

Mr. Hoekstra has been President Trump’s faithful messenger in Canada amid a historic low in relations. More than 170,000 Canadians want him gone.

© Ian Austen/The New York Times

Mr. Hoekstra has been President Trump’s faithful messenger in Canada amid a historic low in relations. More than 200,000 Canadians want him gone.

© Ian Austen/The New York Times