Yes, the Nazi symbol meant peace prior to Nazis took it. Nero used this particular symbol to signify 'peace from Christianity. The swastika as a symbol was used in Sanskrit the prehistoric language of Hinduism. It has some spiritual meaning for Hindus. However, it is known lately by the western world as a symbol denoting evil. Check out http://en.wikipedia.org/wiki/Swastika for more information.
The swastika symbol had been around in various forms since ancient times, and it had many different meanings, in many different cultures over the years. It's unfortunate that the Nazi's chose to use it as a symbol of hate.