The one factor that hits all working class people, regardless of color is OBAMACARE.
That is the reason for this...................
Another thing that hits all Americans is massive, uncontrolled immigration, legal or not. If you are a working American the addition of millions of foreign workers drives down wages and demand for goods and services drive up prices. If you are an American who is not working the increase of taxes and the increasing costs of goods and services diminishes your government check and its purchasing power.
The only people who win on immigration is the top 4 to 5% of the wealthiest Americans.