@Sharma Ji - mortal, idiotic humans have this great coping mechanism that some of them are superior to other humans, because they look better or have more money, or have a glorious history, or because they are currently some kind of superpower, or they can write better than others and so on. Utterly insignificant chutias, the collective mass known as humankind is the most deluded species on earth.
If you are scared, you are a shudra. If you are scared that walking at night, someone will knife you and rape your woman, you are a shudra. If you are scared that a cab driver can intimidate you, you are a shudra. If you cannot put up a fight, you are a shudra. Shudras believe law protects them and fll into the trap of good behavior, believing virtuous existence is some kind of revenge on their tormentors.
BUT - A lion is a also a shudra, because it will be killed by gangrene and pests. It can bully and kill others, but it is also a shudra. Humans create unnecessary analogies around lions.