
1) Caste 2) Pariahs
Found on
https://www.crosswordclues.com/clue/untouchables
[law enforcement] The Untouchables were a group of eleven U.S. federal law-enforcement agents, led by Eliot Ness, who, from 1929 to 1931, worked to end Al Capone`s illegal activities by aggressively enforcing Prohibition laws against Capone and his organization. In their conduct, they became legendary for being fearless and incorruptible, e...
Found on
http://en.wikipedia.org/wiki/Untouchables_(law_enforcement)

(from the article `Ness, Eliot`) American crime fighter, head of a nine-man team of law officers called the `Untouchables,` who opposed Al Capone`s underworld network in Chicago.
Found on
http://www.britannica.com/eb/a-z/u/14
No exact match found.