Related Clues:

• Revolutionist's need
• Reason for being
• Effect's partner
• Reason to demonstrate
• The whales, say
• Save the Whales, for one
• Free Tibet, e.g.
• Activist's passion
• Aim, intention, design
• Aim or intention
• It brings about an effect
• Aim, intention
• A movement or charity- usually good
• Goal, aim or intent
• Motivation or intention