I'm very cautious about what decals go where. Now that I'm a teacher, no decals anywhere. (I can't advocate anything political, religious, etc.) If I put an NRA decal, or candidate decal, or religious decal on my vehicle, student, staff and my principal will see it. I made the mistake of talking about guns with a couple students I had who hunted, then Parkland happened. Now I'm hiding in the dark like a cock roach.
I have had such difficulties and challenges due to decals, that I've come to realize that it just isn't worth it. When I was an aircraft mechanic, I put decals all over my tool box. When I went to a different airline, the mechanics there disapproved of some of them, so my box and my car became a target. They poured super glue in my tool box lock. They vandalized my tool box and my car. I eventually had to quit. After that I pulled every decal I had off of every thing I had that would ever leave the garage. I no longer discuss anything with anyone at work...other than work.