It was during my visit to a temple that I spotted two swastikas on its gate and they set me wondering why the swastika has taken on a meaning that denotes evil.

The swastika on the temple's gateIn ancient times, the swastika was a symbol that represented life, sun, power, strength, and good luck.

Ancient Greece

Ancient Rome

Ancient India

The Viking era

A pottery bowl from ancient China

American Indian art: the Navajo rug
A Navajo bracelet

19th century Chinese textile

A Hindu temple, IndiaIn modern times, before Nazi Germany usurped the emblem, it was a symbol for good luck.

A good luck coin from the US
A good luck coin from the US
A 1916 photo of a Canadian women's ice-hockey team called the Swastikas
A greeting card
The good luck charm

The symbol that proclaimed the purity and the superiority of the German race in Nazi Germany in the Second World War. 
The holocaust committed in the name of the now infamous Swastika.

Coincidentally, I spotted this photo in www.batupahat.org. The swastika emblem and the name of the shop inappropriately named "OM" , the Hindu mantra.
