Above drawing is pretty much standard social order in most countries. Who has power.
Head - politicians Kshtriya - soldiers n police Vaishyas- business owners Kshudra- worker bees
Dalits - trash workers, old days poop transporters. So they stank with poop so nobody wanted to touch them.
This chart is old, during that chart time, rest of the world had slaves etc. Blacks were not allowed to use same bus etc. Egypt had jews as slaves etc.
There is barely any class system now. Dalits r doctors n they are in many respected professions , n yes people touch them.
https://www.thegatewaypundit.com/2021/03/racist-joe-biden-indian-american-astronaut-amazing-indian-descent-americans-taking-country-video/