What is the lowest caste in the traditional caste system and is often referred to as “untouchables”?

The lowest caste in the traditional Indian caste system is often referred to as the "Untouchables". This caste is officially known as the Dalits. The term "Dalit" means "oppressed" or "broken" in Sanskrit. The Dalits were typically assigned jobs considered "unclean" and were marginalized and discriminated against in various ways. It's important to note that the caste system and the discrimination it perpetuates is illegal in India today, although social prejudices can still persist.