The cow protection movement is a predominantly Indian religious and political movement aiming to protect cows, whose slaughter has been broadly opposed by Hindus, Buddhists, Jains, Zoroastrians and Sikhs. While the opposition to slaughter of animals, including cows, has extensive and ancient roots in Indian history, the term refers to modern movements dating back to colonial era British India. The earliest such activism is traceable to Namdhari (Kooka) Sikhs of Punjab who opposed cow slaughter in the 1860s. The movement became popular in the 1880s and thereafter, attracting the support from the Arya Samaj founder Swami Dayananda Saraswati in the late 19th century, and from Mahatma Gandhi in the early 20th century.