The swastiska has had a very long history, before the Nazis misused it for their purpose.
wikipedia.org/wiki/Swastika
So when kayne used it, of course he referred to the Nazi symbol and just wanted attention and strongly hint at his antisemitism.
But other people can mean something very different:
"In several major Indo-European religions, the swastika symbolises lightning bolts, representing the thunder god and the king of the gods, such as Indra in Vedic Hinduism, Zeus in the ancient Greek religion, Jupiter in the ancient Roman religion, and Thor in the ancient Germanic religion."