Archaeological evidence of swastika-shaped ornaments dates from the Neolithic period. An ancient symbol, it occurs mainly in the cultures that are in modern day India and the surrounding area, sometimes as a geometrical motif (as in the Roman Republic and Empire) and sometimes as a religious symbol. It was long widely used in major world religions such as Hinduism, Buddhism and Jainism.
Though once commonly used all over much of the world without stigma, because of its iconic usage in Nazi Germany, the symbol has become controversial, especially in the Western world.
Original Source : http://en.wikipedia.org/wiki/%E5%8D%90