Oh dear, the naivety extends further.
Let's deal with the first rather ignorant point. This is an age of civil rights mate. Do you honestly believe that civil rights ended with the emancipation of women and African Americans? There's still huge inequality in jobs,education,stereotyping by police and other agencies etc.
Whether Pogba leaves is down to him. His incentive to leave will be based on: ambition,earning power,lifestyle change. Of course the racism he's been subjected to recently may prove to be the final straw. I'm not discounting that. As for Spain, it's not made up unless you've been living in a void for the last 3 months. Madrid is his likely destination, we all know it.
The selfish comment was directed at you BTW, not Pogba, but it doesn't surprise me