Activist NGOs increasingly oppose industrial projects that have nevertheless been approved by public regulators. To understand this recent rise in NGO activism, we develop a theory of optimal regulation in which a regulated industry seeks to undertake a project that may be harmful to society. On...

Activist NGOs increasingly oppose industrial projects that were approved by public regulators. We develop a model that explains this phenomenon. We consider a potentially-harmful industrial project that is subject to regulatory approval. The regulator can be influenced by the industry, and may...