Dorje Shugden (, Wylie: rdo rje shugs ldan, ), also known as Dolgyal and Gyalchen Shugden, is an entity associated with the Gelug school, the newest of the schools of Tibetan Buddhism. Dorje Shugden is variously looked upon as a destroyed gyalpo, a minor mundane protector, a major mundane protector, an enlightened major protector whose outward appearance is that of a gyalpo, or as an enlightened major protector whose outward appearance is enlightened. In Tibetan Buddhism, Dorje Shugden is considered to be the protector of Je Tsongkhapa's pure dharma, traditionally regarded as the founder of the Gelug school. The Dorje Shugden controversy arose in the 1930s within all schools of Tibetan Buddhism, including the Gelug school itself, regarding Dorje Shugden's nature, status of enlightenment, differences from traditional Gelug teachings, replacement of traditional Gelug protectors, sectarian functions, and actions by western adherents of the New Kadampa Tradition. Origins Minor protector Dorje Shugden, also known as Dolgyal, was a "gyalpo" "angry and vengeful spirit" of South Tibet, which was subsequently adopted as a "minor protector" of the Gelug school, the newest of the schools of Tibetan Buddhism, headed by the Dalai Lamas (although nominally the Ganden Tripas). Georges Dreyfus says "Shuk-den was nothing but a minor Ge-luk protector before the 1930s when Pa-bong-ka started to promote him aggressively as the main Ge-luk protector." Dreyfus states "the propitiation of Shukden as a Geluk protector is not an ancestral tradition, but a relatively recent invention of tradition associated with the revival movement within the Geluk spearheaded by Pabongkha." Pabongka's transformation Pabongka transformed Dorje Shugden's "marginal practice into a central element of the Ge-luk tradition," thus "replacing the protectors appointed by Dzong-ka-ba himself" and "replacing the traditional supra-mundane protectors of the Ge-luk tradition." This change is reflected in artwork, since there is "lack of Dorje Shugden art in the Gelug school prior to the end of the 19th century." Pabongka fashioned Shugden as a violent protector of the Gelug school, who is employed against other traditions. Shugden was a key element in Phabongkha's persecution of the Rimé movement. Within the Gelug school itself, Pabongka constructed Shugden as replacing the traditional Gelug protectors Pehar, Nechung, Palden Lhamo, Mahakala, Vaisravana and Kalarupa, who was appointed by Tsongkhapa. Restrictions on the practice of Shugden were implemented by the 13th Dalai Lama. Pabongka apologized and promised not to practice Shuk-den any more. Kelsang Gyatso David Kay notes that Kelsang