Japanese Zen and the Zen priest's function has largely been reduced to officiating at funerals, a practice sarcastically referred to in Japan as . For example, the Sōtō school published statistics stating that 80 percent of laity visited temples only for reasons having to do with funerals and death. Mahayana Buddhism teaches śūnyatā, "emptiness", which is also emphasized by Zen. But another important doctrine is the buddha-nature, the idea that all human beings have the possibility to awaken. All living creatures are supposed to have the Buddha-nature, but don't realize this as long as they are not awakened. The doctrine of an
Buddhism in the West general distinction between Buddhism brought to the West by Asian immigrants, which may be Mahayana, Theravada or a traditional East Asian mix ("ethnic Buddhism"), and Buddhism as practiced by converts ("convert Buddhism"), which is often Zen, Pure Land, Vipassana or Tibetan Buddhism. Some Western Buddhists are actually non-denominational and accept teachings from a variety of different sects, which is far less frequent in Asia. Demographically as a convert religion, Western Buddhism appeals more to whites and to the middle and upper-middle classes as well as to the politically left wing and to those who live in urban areas. While retaining