He said my brother deserved to die

[No Vested Interest]

19. Not a good idea

to put a bumper sticker on his truck, no matter how much satisfaction you would get at that moment.

The guy is a trouble-maker, and likely a bully; he would delight in causing trouble for you, and perhaps it would do your buddy-shop owner no good.

You could, however, have a radio blaring Woody Guthrie and Pete Seegar music real loud.
This Land is My Land.
Where Have All the Flowers Gone.
Abraham, Martin and John