Racial profiling at the exit door at Walmart centers

The issue is racial profiling at the exit door asking for receipts when you just walked away from the counter there were several customers in front of me that went out the door when I came up to the door I was stopped and asked for a receipt yes I am a black male but this has happened before I'm fed up and it needs to stop therefore I am filing a boycott petition against all Walmart centers Nationwide they need to change that policy they have cameras on every counter they know who's paid for what when and how much there's even a camera on the register itself there's no need to harass the customer after spending hundreds of dollars in their store.the harassment of paying customers at the door needs to stop immediately that is a very sad and improper practice for a company with the amount of security they have in their store this practice needs to cease immediately.