I live on the top floor of a council block (you really must come over actually - shame we didn't collide last time you were down)...every night without fail, pretty much all the lights of every single office block in the city stay on all night.
The intention may not be menacing but the level of carelessness and general apathy kind of is. Especially when we constantly get fed messages about not leaving TV sets on standby and using energy saving lightbulbs.
(mind you, the lights and purple pollution cloud do make a mean sunset!
)