During the 1981 presidential election François Mitterrand promised to get rid of the police units known as the brigades spéciales de nuit (BSN) or special night squads. At the time these units were accused of having committed a number of extremely serious blunders. But thirty years later the night squads' successors, the brigades anti-criminalité (BAC) or anti-crime squads, who specialise in dealing with run-down crime-ridden housing estates, are still around.