In France, drug trafficking generates 2.7 billion euros each year, according to estimates. If part of this sum is spent in cash, another is reinjected into legal circuits.

Money laundering is carried out in particular via businesses that are established on the street, such as barbers or sandwich shops. In the Saint-Just district of the 13th arrondissement of Marseille, there are beautiful, flashy windows with visuals and neon lights, but few or no customers. To be completely effective against drug trafficking, it would be necessary to be able to cut off all the heads of the hydra, explains Rudy Manna, spokesperson for the Alliance police union.