A teacher and journalist has gained a large following for highlighting the apparent luxury items worn by politicians. It has also earned him high-profile detractors.

Claudia Sheinbaum, the country’s president, was the first woman to give the country’s annual Grito de Dolores, a tradition dating to a priest’s call to arms against Spain more than two centuries ago.

© Luis Antonio Rojas for The New York Times

Accidents involving vehicles and trains have been increasing as the Mexican government has pushed to revitalize railroads and build new passenger lines.

© Jorge Alvarado/Reuters

Money transfers to Guatemala, Honduras and other nations have increased in recent months, totaling billions of dollars. Undocumented migrants in the United States say they are sending money to relatives while they can.

© Philip Cheung for The New York Times