[infosample]

Again, it is a metaphor, don't take to too literally.

Blacks were slaves, whites and immigrants were not.

Can you picture slavery as digging out of a hole (debt)? Until breaking even, you are subject to compound debt.

Yes, immigrants do well within a generation or two. Blacks have only had civil rights for a generation. White males not only have always rights but made them.

Yes, I'm generalizing based on skin color. That is literally what race is.