Disrespectful?

Wearing a swastika to a Polish festival would be disrespectful.
Wearing a Turkish military uniform to a Greek festival would be disrespectful.
Dressing as a Nazi at a Jewish festival would be disrespectful.

Wearing a kilt is not disrespectful.

Which shows more respect, wearing your national or cultural garb and showing pride in your heritage and culture, in a place and time where others are doing likewise, or wearing a costume?