The Swastika is a Buddhist symbol and they still use it. I think the Hindu and Daoists may use it too, you see it everywhere in Asia.

Yes. And as a result, the Finnish Air Force ended up using it (but tilted 45 degrees) during WWII - totally independently of Hitler. Field Marshall Mannerheim, the Finnish supreme commander during the war, travelled a lot in Asia in the 20's. But people are usually a bit surprised to see pictures of British-made Hurricanes and Blenheims and US-made Brewsters with swastikas on them.