Mexican President Claudia Sheinbaum took office on October 1. She inherits a country where organised crime still rules in many regions, a deadly situation that her predecessor, Andrés Manuel López Obrador, failed to curb. More than 30,000 murders are still committed each year, and on average, 29 people disappear every day without a trace. The city of Culiacán in the northwestern state of Sinaloa has recently become the symbol of this violent epidemic. Our correspondents Laurence Cuvillier, Quentin Duval and Ed Augustin report.