What the modern Capitalism-based American economic system really is, since the citizens of the Middle, Lower, and Poverty classes are forced to spend their entire lives working for less and less money, while being tricked by the Upper and Wealthy classes into believing that their dreams will come true if they work hard enough.
For example : in ancient Japan, the Tokugawa Dynasty ruled with a caste system, where the samurai were the highest.
Another example : India apparently has a caste system. This means that if you were born of a poor family, you are required (not destined, required) to be that way, and nothing you do will change that. Specifically, if someone was the reincarnation of the Buddha, that person would be the most powerful man in India.
Contrary to the fetish beliefs, capitalism is NOT a caste system. Capitalism does not judge people on their birth, but requires people to work hard if they want to be rich.