It is saying that even thought they have done everything to stop it, racial injustice and segregation still engulfs the city. Meaning the people there wont stop being racist and will continue to segregate. Hope this helps!
The answer is that 'it was the first anti-slavery piece of literature', and at the time, slavery was still very present. So it was bound to be very controversial for its time.
The proud and selfish are the most foolish
