He wore his ethnic heritage as a 'badge of honor/pride'. [=he was proud of his ethnic heritage and did not try to hide it]
She was wearing a 'badge' that read “Support your local library.”
The receptionist glanced at my visitor's 'badge'.
(..) Arise, SirJiminy Cricket. Well! Oh-ho-ho! My, my! Mmm. Say, that's pretty swell. Gee... thanks. But, uh, don't l get a badge or something? - Well, we'll see. - You mean maybe l will? - l shouldn't wonder. - Make it a gold one? Maybe. Now, remember, Pinocchio, be a good boy. (..)1940 Pinocchio