The band have spoken out on this sort of thing on a number of occasions. They got accused of being Nazis because they used Nordic runes in their artwork that also got used by the SS. The Swastika is thousands of years older than Nazism, so why should radicalism continue to dictacte its meaning?
Not to mention, I believe this song also tries to dispel the negative stigma that surrounds the swastika; just because some fascist nation in the past used it shouldn't deter anyone's religious beliefs from using the symbol. We should never forsake our ancestor's past icons just because some people's feelings will be hurt.