Wikipedia
Rangtong ( "empty of self-nature") is a philosophical term in Tibetan Buddhism that is used to distinguish the majority teaching on the nature of śūnyatā or "emptiness", namely that all things are characterised by emptiness in both the relative and absolute sense. This position is the mainstream Tibetan interpretation of Madhyamaka, one of the main Mahayana schools, which dominates Vajrayana Buddhism.
The oppositional minority position is called shentong (and it has often been incorrectly associated with the Cittamātra ( Yogacara) position, but is in fact also Madhyamaka) and is present primarily as the main philosophical theory of the Jonang school although it is also taught by the Sakya and Kagyu schools. In 1658, the Gelug authorities banned the Jonang school for political reasons, forcibly converting its monks and monasteries to the Gelug school, as well as banning shentong philosophy and books, thus making the rangtong position the overwhelmingly majority one in Tibetan Buddhism.