I live in the outskirts of Cincinnati, Ohio. Lots of ghettos on both sides of the river, FILLED with people with no religious background, no education, and very little income.
I think your method of gathering information on religious background is highly flawed. I'm very familiar with the poor areas of Atlanta, and my experience is that religious affiliation is very high in those areas of town. Your impression does not appear to be based on anything factual. I have no idea how you would form that opinions about the religious backgrounds of people in ghettos other than by making naked, uninformed assumptions.
Yes, they tend to be poor, and tend to have lower education. But they also tend to be black, a group which in the US has a far higher propensity for religious affiliation than do whites, with black women having the highest propensity.
Under a government which imprisons any unjustly, the true place for a just man is also in prison. Thoreau: Civil Disobedience (1846)
I believe that a scientist looking at nonscientific problems is just as dumb as the next guy.
Richard P. Feynman
If there is no struggle, there is no progress. Those who profess to favor freedom, and deprecate agitation, are men who want crops without plowing up the ground, they want rain without thunder and lightning. Frederick Douglass