" The states with the highest percentage of people age 18-64 on disability in the U.S. are West Virginia (where the number is nearly 1 in 10), Arkansas, Alabama, Kentucky, Mississippi, Maine, Tennessee, South Carolina and Missouri."
This article shows what states in what regions of the country have the highest rates of people with disabilities, and it also explains what the government is doing to help those with disabilities. It, in addition to these two things, explains in detail how the people with more money and more intellectual awareness have a responsibility to help the less fortunate ones.
"Income grew 9 percent for households at the 60th percentile, 22 percent for those at the 80th percentile and 36 percent for those at the 95th percentile."
This article explain what exactly the "opportunity gap in America" is, and in addition to that, shows backed up graphs and evidence as to how the gap has increased/decreased in the past 40 years. It clearly shows that the rich get richer, and the poor stay at the same level or get poorer.