Much outdoor lighting is operated for the purposes of security.
This is understandable but just as with other forms of security, it should be restricted to the property itself. My father used to say that one's right to swing one's fist stopped at the end of his arm. Fences and dogs also provide security but are not allowed to extend onto other people's property. Light, however, is something that for the purposes of the light owner's security is allowed to compromise the security of others by impairing their vision. This is wrong.