I was in our local Walmart the other day, and noticed that the old men usually standing near the exits that act as greeters (who say hello in an attempt to acknowledge you, and keep you from stealing from being acknowledged/noticed) were replaced with some of the biggest employees I have seen recently. They were mid 30s guys about 6'4" 280#. This tells me they are taking an active approach to stopping idiots from testing their 2nd amendment rights.
https://www.foxnews.com/us/suspect-in-disturbance-at-missouri-walmart-said-he-was-testing-2nd-amendment-rights-prosecutors