Cyclone Chido not only ravaged Mayotte’s infrastructure but also laid bare tensions between the island’s residents and its migrant population.

The devastation from Cyclone Chido that shattered corrugated metal shacks and thousands of lives on the island of Mayotte was both immediate and long coming.

France held a national day of mourning for Mayotte, its Indian Ocean territory devastated by a violent cyclone on Dec. 14, beginning in the morning on Monday with a minute of silence for the scores of residents left dead by the storm.

At Mayotte’s main hospital in the capital, Mamoudzou, doctors face a cascade of crises.