Entitled disrespectful manager

What one of the workers there Adam told me “You can’t just come ****ing sit here” , apparently if you not white they don’t look at you and you got no business there - I am also a resident at the estate paying social levies - I was completely minding my own business and that’s how aggressive he was, I apologized to him in any case - will never step foot there again - if there’s no tables no problem tell me respectfully like the customer/resident/ a human being that I am but don’t swear at me unprovoked