Еще один пример употребления идиомы add insult to injury из моего любимого сериала Parks and recreation.

Leslie says: Well, Pawnee, Indiana, is a wonderful town, and I love it, but they hate me. And they're trying to kick me out of office. One time, they made a pinata of my face, and then everybody in the town came and took turns hitting it with a stick, and they filled it with broccoli, just to add insult to injury... But politics... You know what I mean, right?