In Buddhism, the svastika is a symbol of the wheel of dharma (dharma-cakra), or in Zen, the seal of the buddha-mind (busshin-in) transmitted from patriarch (soshigata) to patriarch.
In the 20th cent., the svastika/swastika was adopted by the Nazis in Germany as the party emblem. It was mistakenly understood as an Aryan symbol, indicating racial purity and superiority.
"Svastika." The Concise Oxford Dictionary of World Religions. . Encyclopedia.com. (August 15, 2018). http://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/svastika
"Svastika." The Concise Oxford Dictionary of World Religions. . Retrieved August 15, 2018 from Encyclopedia.com: http://www.encyclopedia.com/religion/dictionaries-thesauruses-pictures-and-press-releases/svastika