The parallel itself had more than a germ of truth. Blacks were forced, via slavery, to risk their lives in cotton fields so that whites might benefit economically while blacks died prematurely. Men were forced, via the draft, to risk their lives on battlefields so that everyone else might benefit economically while men died prematurely. Both slaves and men died to make the world safe for freedom-someone else's. We tell women they have the right to children and tell men they have to fight for children.
Men still do.
He still does. These symbols of deference and subservience are common with slaves to masters and with men to women. Blacks are less likely than whites to attend college or graduate from college. Traditionally, the ruling class had people in the field, working for them-called slaves. Power is not in who holds the office, power is in who chooses who holds the office.