That there is a gap, a wide gap in income and wealth between average Ameticans and top income Americans is fact. To one extent or another that has been true forever.
However, it is not fact that average and low income Americans are at their income level because of the wealth of the top 1%, 5% or 10% of Americans.
That fact is lost on politicians like Sanders and Warren who are trying to convince you of a cause and affect and that is a rocky road to follow. Beware!