The precedent for the Antibody Defense in Registration law was set in federal court with the case State of New York v. Atom Smasher, 206 F.Supp.2d 573 (1985). In this case the court held a private citizen responding to a public threat that is supernatural in nature can avail themselves of the Antibody Defense against prosecution for violation of the National Superhero Registry. The individual claiming the defense must constitute the proximate cause for the resolution of supernatural incident, or multiple incidents that share a similar source, and their actions must not impede local law enforcement. However, if the individual is found to have the intent to seek out dangerous supernatural incidents and commit vigilante acts, then they can no longer avail themselves of the Antibody Defense and can be prosecuted as an unregistered vigilante under the NSR.
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