[laumars]

The swastika has existed for thousands of years before the Nazi party ever existed and has never represented war before Hitler borrowed it. You can still see occasional swastika designs all around Europe in pre-WW2 buildings as well as used commonly outside of Europe and North America.

The question of the usage of the swastika then becomes intent. eg is it used as part of a Pagan, Indian or other non-Nazi design?

[gentaro]

I figured it was obvious from the context that the hypothetical person is wearing it in support of Nazis, and not as a buddhist symbol...

[laumars]

Not really. You wanted a more direct comparison with the GP and the GP wasn't wearing his T-Shirt in support of the Nazis. Which means either your counter-analogy is also flawed or the context should be that the wearer isn't doing so in support of the Nazis.