A mobilizer is someone who gets people moving and organized, usually in a political or social context. Synonyms for mobilizer include organizer, activator, catalyst, instigator, initiator, promoter, enabler, facilitator, agent, and driving force. All of these words describe someone who takes action and gets others to do the same, whether it's through persuasive argument, charisma, or behind-the-scenes coordination. A mobilizer might rally a group of volunteers, galvanize public opinion, or simply help others see the need for change. Whatever their approach, a mobilizer is dedicated to making things happen and inspiring others to join in the effort.