Police or anyone who works in Law Enforcement.. I have "race" question. ?

The clothes I wear aren't baggy, "urban" or "thug" like at all. Many of the clothes I do wear come from Old Navy, Forever 21 and Charlotte Russe. Every time I walk by cars, I always hear the sounds of the car door being locked. I work in the mall at one of the clothing stores. Many people leave there bags around near them, but set them on the floor while they are trying on clothes. There have been numerous situations in which the Non-Black co-workers are helping the customer. As soon as it's my turn to go by the dressing rooms and help out, the customers take one look at me and grab their items, put them on their lap and clutch them extremely close to them. This isn't a one time occasion. It's happened numerous times. I remember one time where a customer asked me a question and her friend was sitting on a chair with all her shopping bag belongings. When I took a look at the customers pants, her friend quickly grabbed her belongings like I was going to take them. What is the deal? I'm extremely nice, I don't do anything wrong, I speak well. I smile all the time.Why is this happening!? Do you know anyway I could stop having these people think I'm some type of delinquent? It doesn't make sense.