No surprise that this hit the Internet quickly!
It's unclear if an employee placed the sign, but my guess is that it was someone just messing around and moved the sign.
Walmart has addressed the issue, apologized, and they say they removed the sign.
Absolutely, Anthony. We agree this was horrible and we've since removed the sign from the display. -Vik— Walmart (@Walmart) August 9, 2017
This was a terrible error. We are working to identify the store involved. -Mac— Walmart (@Walmart) August 9, 2017