From the U.S. border to the indigenous south, Pope Francis has visited some of the poorest and most violent corners of Mexico on his five-day trip and celebrated Mass yesterday before an image of the country’s patroness, the Virgin of Guadalupe.

Chronic violence and corruption will be themes of his visit to the world’s second most populous Roman Catholic country, and he will address the plight of migrants trying to reach the United States with a service at the northern border next week.