Threated like a ***** because of colour of skin

I Walked into store to purchase 2nd hand games, before I could even make it too the rack, I was stopped by one of the staff to hand in my backpack, I just finished a shift myself and was in full work uniform, even though there were numerous women in the store with handbags and a light skin man with a carrier bag at dvd rack, he proceeded to ask me and no one else about the bag situation. I then asked the staff member if it is because I'm "brown" "coloured" he said it's their policy yet with all the women in the store with their handbags they were not asked the same request. I was then told by this staff member I can leave if I don't comply. (Which in hindsight I should have done) I reluctantly gave my bag and then all the staff then proceeded to watch me as I browsed their wares as if I was a *****. I eventually found 2 games(one was scratched and the other was ok) then when I got to the counter I asked the clerk if all their customers are treated like ******* upon entry, she nervously laughed said yes.... not sure if she was joking but I wasnt impressed. I'll probably won't be coming to this store again because of how I was treated... this being my 2nd visit my 1st visit no one bothered with me at all and I browsed at my own leisure. Terrible treatment this time round and your store needs to treat customers better regardless of the colour of their skin