>>519452371 (OP)
Every culture has it's own way of expressing the same thing. Making fun of India for the caste system ignores the aspects of our own cultures that perform the same function. And it is a biological function. See: Peterson; top lobster.
>OK, Gurpreet
Nope.
India's way of expressing this biological tendency is not unique, but it turns it up to 11 and is unapologetic about it. Kind of like the class distinctions in England. There is no way for a person to change castes, no matter what happens. Slumdog millionaire is still a dog.
>>519453224 has it pretty accurately described with that one image. The lower castes are the ones largely responsible for keeping the entire system functioning, despite the dishonor of being low caste themselves. They uphold the system. It wouldn't work without them.