@RockPaperLizard The self-employment idea is interesting. I wonder if the OP would keep the sticker if he/she were self-employed and visiting potential clients in that car. Perhaps many clients might share the 'joke' - many perhaps not. The OP might choose then to self-censor...

@paul It would be interesting to see. One of those "if the foot was on the other shoe" experiences. The nice thing would be that the full decision would be the OP's own. I can say from personal experience that I rejected more clients than I accepted because their values conflicted with mine. Could I have made more money in the short-term by compromising my values? Perhaps. Are there more important things to me than money? Definitely.