I don't know how long I have been a member of NRA but I have had a sticker on at least one vehicle every day since and have never had a problem, advantage, woo-hoo, horn honk, cussing out, or anything related to the sticker. I live in what is a pretty urban area so I go to the DMV, Walmart, Tag office and such where you might expect to see some "inner city personnel" but, as I said, they have never even acted like they saw the sticker.
Put a Bama sticker on and you will get "Roll Tide" 100x per day.