The Bishnoi movement was an environmental movement started in the 1700s in Rajasthan, India led by Amrita Devi and Bishnoi villagers. They sacrificed themselves to protect sacred khejri trees from being cut down by the king's soldiers. Over 363 Bishnoi villagers were killed for hugging the trees. The king was informed and stopped the logging, designating the area as protected. The Bishnoi movement laid down 29 principles forbidding harm to trees and animals and inspired later environmental movements like Chipko.