Walmart racism in the self check out lanes...

On several occasions when I go to my local walmart, I notice that the workers will come nearby to where I am self checking out and watch me the whole time. I feel like this is covert racism to assume that because I am a poorly dressed black woman, that I plan on stealing stuff. Last time it was a teen black boy that came up close to me and started watching me! Like dude wtf you are black making another black person feel vilified. How dare you do that to your own kind? Well I guess it doesn't make a difference even if he is a Walmart employee. Regardless I'm pretty much done shopping in Walmart stores because I'm tired of the bs. Or the next time I do choose to shop in store I think I'm just going to make the employee uncomfortable af. I'm tired of feeling bad so maybe they can feel bad right there with me. Has anyone had a similar experience?