Many believe that Cincinnati on this day became the first U.S. city to pay fire fighters a regular salary. Others say no, it was Boston, back in 1678, exact date unknown - 1853
President Martin Van Buren issues a broadly-applicable executive order granting the 10-hour day to all government employees engaged in manual labor - 1840
Chicago stockyard workers win 8-hour day - 1918
At the height of the Great Depression, 35,000 unemployed march in New York?s Union Square. Police beat many demonstrators, injuring 100 - 1930