A person is guilty of harassment in the first degree when he or she intentionally and
repeatedly harasses another person by following such person in or about a public place or places or by engaging in a course of conduct or by repeatedly committing acts which places such person in reasonable fear of physical injury. ~
http://definitions.uslegal.com/h/harassment/
This may be a stupid question, but is harassment defined as such if it's a one-time incident? According to the site above, the answer seems to be "no," but I'm not law-savvy.