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'.
(..) - We don't even know you. We're FBI agents. You're not FBI agents. - How do you know? - Cos y'all look like door-to-door salesmen. Hey, you wanna buy a badge? They left an hour ago. Going that way. Unmarked tanker trucks. What do archaeologists haul out in tanker trucks? (..)1998 The X Files
(..) I'm an annoyance to my superiors, a joke to my peers. They call me Spooky. Spooky Mulder, whose sister was abducted by aliens... ...who chases after little green men with a badge and a gun... ...shouting to the heavens to anyone who will listen... ...that the sky is falling. And when it hits, (..)1998 The X Files