What I meant by that is, that there can be no sort of discrimination based on the caste of a person. Neither in Job applications nor on anything run by the government. maybe you forget to read the first few lines of the wikipedia article you quote Just like child labor is illegal but still widely practiced, amongst other stuff...
iirc, the only snakes that can squeeze you to death are the constrictors, and I dont believe cobras are constrictors. The depend on their venom paralyzing their victim and then swallowing it as it dies. a comstrictor doesnt normally have venom so it has to squeeze its prey to immobilize it so they can eat it.