Stop letting such a thing as your skin colour define you.   You are not marginalized unless you think you are.   I certainly would never marginalize you nor anyone I know.   If you were invited there because you are black that is wrong and you should have said so, if you were invited there because you are a promising writer with obvious talent....way to go!!  :)  I hope you blossom into a magnificent writer that can also speak about 'all' people and not define yourself to such a silly degree by the colour of your skin (it is a form of racism and you notice it in silly groups like BLM).    

Just so you know the victim business is exhausting for the rest of us...believe me.    Sorry your father had to deal with such a racist country and be kicked out for not being black enough.   That is wrong.  Just be wonderful you.