Which religious symbol was strategically 'rebranded' in the 20th century, transforming from an ancient spiritual emblem into a universal symbol of peace during the anti-war movement?

Throughout history, religious institutions have created powerful brand identities through symbols, narratives, and visual elements. These 'spiritual brands' have achieved remarkable longevity and loyalty that modern companies can only dream of achieving. This trivia question explores how ancient religious traditions pioneered brand storytelling techniques that continue to resonate in today's marketplace of ideas.

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The Buddhist Dharma Wheel (Dharmachakra)
The Christian Cross
The Peace Symbol (based on semaphore signals for N and D - Nuclear Disarmament)
The Star of David