In 1860, twenty-six years before the Haymarket Riot, New York City's German population was 22,230.
The Haymarket massacre (also known as the Haymarket affair, Haymarket riot, or Haymarket Square riot) was the aftermath of a bombing that took place at a labor demonstration on May 4, 1886, at Haymarket Square in Chicago. There were 22,230 ethnic Germans in Chicago, or 20% of the city's population, in 1860. The Haymarket Riot occurred in 1886. 
