I’ve often thought about having a bumper sticker made that reads “Visualize World Peace (and see how much good it does.)”
There actually was a bumper sticker awhile back that said “Visualize Whirled Peas” with an illustration of a tornado of English peas.
Another one popular at that time was “Smash Smashism.”
These were waggish retorts aimed at lefty professional protestors & peaceniks.
These days your car would get keyed.