"came to the nuisance": the 1879 case of Sturges v Bridgman is still good law, and a new owner can bring a claim in nuisance for the existing activities of a neighbour. In February 2014 the UK Supreme Court ruling in the case of Coventry v Lawrence prompted the launch of a campaign to have the "coming to a nuisance" law overturned. Campaigners hold that established lawful activity continuing with planning permission and local residents' support should be accepted as part of the character of the area by any new residents coming to the locality. United States Many states have limited instances where a claim of nuisance may be brought. Such limitation often became necessary as the sensibilities of urban dwellers were offended by smells of agricultural waste when they moved to rural locations. For example: many states and provinces have "right to farm" provisions, which allow any agricultural use of land zoned or historically used for agriculture. There are two classes of nuisance under the American law: a nuisance in fact, or "nuisance per accidens", and a nuisance per se. The classification determines whether the claim goes to the jury, or gets decided by the judge. An alleged nuisance in fact is an issue of fact to be determined by the jury, who will decide whether the thing (or act) in question created a nuisance, by examining its location and surroundings, the manner of its conduct, and other circumstances. A determination that something is a nuisance in fact also requires proof of the act and its consequences. By contrast, a nuisance per se is "an activity, or an act, structure, instrument, or occupation which is a nuisance at all times and under any circumstances, regardless of location or surroundings." Liability for a nuisance per se is absolute, and injury to the public is presumed; if its existence is alleged and established by proof, it is also established as a matter of law. Therefore, a judge would decide a nuisance per se, while a jury would decide a nuisance in fact. Most nuisance claims allege a nuisance in fact, for the simple reason that not many actions or structures have been deemed to be nuisances per se. In general, if an act, or use of property, is lawful, or authorized by competent authority, it cannot be a nuisance per se. Rather, the act in question must either be declared by