Caldwell Tanner has some great ideas for bumper stickers that won't provoke arguments with other drivers....
https://www.neatorama.com/2013/02/06/Unassuming-Bumper-Stickers/
Unassuming Bumper Stickers
Bumper Stickers for Your Shoes
Maybe this fellow doesn't have a car on which... ...his fellow doesn't have a car on which to put his bumper stickers , or he just wants to communicate with people walk... ...ate with people walking behind him. If you had bumper stickers
https://www.neatorama.com/2009/07/25/bumper-stickers-for-your-shoes/
Ambilvalent or Guarded Bumper Stickers
Here they are, a selection of bumper stickers for people who don't feel that strongly about the... ...on't feel that strongly about the issues on other bumper stickers . Link -via Metafilter
https://www.neatorama.com/2009/06/19/ambilvalent-or-guarded-bumper-stickers/
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