For astronomers, both amateur and professional, light pollution (LP) is a huge problem. The problem has been addressed in a number of publications, and resources to help reduce light pollution also exist on the internets. Here are some of those resources:

1. Our Vanishing Night - National Geographic article on LP
2. What is Light Pollution? - Starry Night Lights article on LP
3. International Dark-Sky Association

Please add more links on how to address light pollution.