I wouldn't risk it. Here in Arizona, with the fall election (aka "House-cleaning") coming up, candidate signs are appearing on the corners of major intersections. That would be a safe place to put a Q sign.
Beside (or in front of) a Kirsten Sinema sign would be about right.
How about a great big Q sign in front of your local “news”paper office?
(I’m almost ROFLMAO just thinkin’ about the pearl clutching hysteria that would go on over at the Billings Gazette if that sort of thing happened......)