Question: which gang was John Morrissey a leader in?
Sentence (from "John Morrissey"): John Morrissey (February 12, 1831 – May 1, 1878), also known as Old Smoke, was an Irish American bare-knuckle boxer and a Dead Rabbits gang criminal leader in New York City in the 1850s and later became a Democratic State Senator and U.S. Congressman from New York, backed by Tammany Hall.
Relevant evidence: Yes