Whenever I see a leftwing bumper sticker, I don't get angry...I get curious. What I do is try to drive alongside the car and look in and OBSERVE. I seek to find the answer to this question: "What's wrong with you?" Almost always I find the answer just by looking and analyzing.
Example: A number of years ago I saw a Janet Reno bumper sticker when she was running for governor in the Democrat primary. Sooo...I pulled alongside the car and saw a Janet Reno lookalike driving. That told me ALLLLL I needed to know.