From today's decision by Judge Jon Tigar (N.D. Cal.) in Roe v. City of S.F.:
Plaintiffs are residents and businesses in the Tenderloin neighborhood in San Francisco. Plaintiffs allege that the City treats the Tenderloin as a "containment zone" for narcotics activities. Specifically, Plaintiffs contend that "for years the City has allowed individuals to openly buy and use narcotics in the Tenderloin, and to remain, under the obvious influence of drugs, on the sidewalks and public spaces of the neighborhood." "Addicts living on the Tenderloin's streets foreseeably support their habit by stealing (e.g., shoplifting, car break-ins, burglaries, robberies) and hawking the stolen merchandise on the sidewalks." And "as their disease progresses, their mental and physical health declines, resulting in them acting erratically, ignoring serious medical problems (e.g., open sores at injection sites), rummaging through trash, discarding garbage on the sidewalk around them, going partially clothed, and defecating in public." As a result, Plaintiffs allege "the City-owned public walkways and spaces in the Tenderloin are dangerous, unsanitary and no longer open and accessible to plaintiffs and other members of the public."
Plaintiffs sued, claiming that the failure to enforce the law was unconstitutional, but the court said no (correctly applying the existing precedents, I think):