Yeah... though there is a lot to like about this poster, you're in dangerous territory here. This would not fly in the USA, at all. Even if you are intending to comment on racial stereotypes in culture and people's reactions to them, this is clumsy.
It's is a bit like if I did a poster for a German band, and put a swastika on it.
In my experience they're extremely particular with "Swiss," and who it does and doesn't apply to.