Tantra: enlightenment to revolution

From the exhibition introduction of the British Museum we learn:

"Explore the radical philosophy that transformed the religious, cultural and political landscape of India and beyond in this powerful exhibition. 

Originating in early medieval India, Tantra had a huge impact on Hinduism and Buddhism from the 6th century onwards."

What does the British Museum mean by "huge impact" (hint: see photo below)?



The British Museum | Just announced | Tantra exhibition