Sri Sri Krishna Balaram Mandir (ISKCON Vrindavan),ISKCON Temple in Vrindavan, Uttar Pradesh, India

The International Society for Krishna Consciousness or ISKCON, known colloquially as the Hare Krishna movement or Hare Krishnas, is a Gaudiya Vaishnava Hindu religious organization. ISKCON was founded in 1966 in New York City by A. C. Bhaktivedanta Swami Prabhupada.

Its core beliefs are based on Hindu scriptures, particularly the Bhagavad Gita and the Bhagavata Purana. ISKCON is “the largest and, arguably, most important branch” of Gaudiya Vaishnava tradition, which has had adherents in India since the early 16th century and American and European devotees since the early 1900s. ISKCON was formed to spread the practice of Bhakti yoga, the practice of love of God in which those involved (bhaktas) dedicate their thoughts and actions towards pleasing Krishna, whom they consider the Supreme Lord. Its most rapid expansion in membership has been within India and (after the collapse of the Soviet Union) in Russia and other formerly Soviet-aligned states of Eastern Europe.

History and belief
Further information: Achintya Bheda Abheda and Gaudiya Vaishnavism

Pancha-Tattva deities: Chaitanya Mahaprabhu, Nityananda, Advaita Acharya, Gadadhara and Srivasa, installed in a Gaudiya Vaishnava temple

ISKCON’s Bhajan during Navratri Golu at Coimbatore, Tamil Nadu, India
ISKCON devotees follow a disciplic line of Gaudiya Vaishnavas and are the largest branch of Gaudiya Vaishnavism. Vaishnavism means ‘worship of Vishnu’, and Gauḍa refers to the area where this particular branch of Vaishnavism originated, in the Gauda region of West Bengal and Bangladesh. Gaudiya Vaishnavism has had a following in India, especially West Bengal and Odisha, for the past five hundred years. Gaudiya Vaishnavism was founded by Chaitanya Mahaprabhu, who rapidly spread his form of ecstatic bhakti (devotion) throughout Bengal. He established Sankirtan, the practice of publicly expressing devotion to Krishna, the Supreme God, through dance and song. This form of communal worship responded to rigid caste structures by engaging all people in worship regardless of caste and creed. Sri Chaitanya Mahaprabhu emphasized chanting the Hare Krishna Mahamantra (the ‘great mantra’). He is considered by Gaudiya Vaishnavas to be an incarnation of Krishna himself.

Bhaktivedanta Swami Prabhupada, believed to have direct lineage with Chaitanya Mahaprabhu, brought Chaitanya’s Gaudiya Vaishnavism to the West in 1965. At 70 years old, he landed in New York without any money (40 rupees of Indian currency). Instead of preaching to New York’s elite, he tapped into the 1960s countercultural spirit by preaching and chanting in public parks and attracting hippies and the youth. His movement, then known as the “Hare Krishna Movement”, grew even larger when he relocated to San Francisco a year later. When it spread to England, it gained publicity and financial backing from the Beatles’ George Harrison. He recorded several tracks with the Hare Krishnas and included the Mahamantra in his hit track “My Sweet Lord”. The first Hare Krishna commune, New Vrindavan (West Virginia), was established by Prabhupada in 1968.Since then, ISKCON has established more than 800 centers all over the world and has millions of followers.

Key to the spread of Gaudiya Vaishnava theology in the Western world were Prabhupada’s writings and translations, including the Bhagavad Gita As It Is, Srimad Bhagavatam (Bhagavata Purana), Chaitanya Charitamrita, and other scriptures. These works are now available in more than seventy languages and serve as the scriptures of ISKCON.

ISKCON describes Krishna as the source of all the avatars of God. Thus ISKCON devotees worship Krishna as the highest form of God, svayam bhagavan, and often refer to him as the Supreme Personality of Godhead in writing, which was a phrase coined by Prabhupada in his books on the subject. To devotees, Radha represents Krishna’s divine female counterpart, the original spiritual potency, and the embodiment of devotional love. The individual soul has an eternal spiritual identity which does not ultimately merge into the non-dual consciousness (Brahman) as believed by the monistic (Advaita) schools of Hinduism. Prabhupada most frequently offers Sanatana-dharma and Varnashrama dharma as more accurate names for the religious system which accepts Vedic authority. It is a monotheistic tradition which has its roots in the theistic Vedanta traditions.

https://www.iskcon.org/