This document provides an overview of intersectionality and argues for adopting an intersectional approach to social justice advocacy and policymaking. It makes three key points: 1) Intersectional analysis is needed to understand how multiple forms of discrimination and disadvantage overlap and interact, affecting people in complex and non-exclusive ways. Failing to consider intersections can cause harm to be overlooked. 2) Intersectional interventions are required to address the needs of people with multiple, intersecting identities who are often excluded. Separate advocacy silos can be ineffective or leave some groups behind. 3) Intersectional advocacy is important to build more inclusive coalitions and avoid tensions between groups that see their interests as competing rather than shared. An intersection