11 JUN--This Day in US Military History

1837 – The Broad Street Riot occurred in Boston, Massachusetts.

The riot began when a company of Yankee firefighters met with an Irish funeral procession on Broad Street. Fire Engine Company 20 was returning from a fire in Roxbury. Many of the firefighters went to a saloon nearby. Afterwards, while traveling back to the firestation, George Fay either insulted or shoved members of a passing Irish funeral procession. The Irish and firemen began to fight, but under the orders of W.W. Miller, the firemen ran to the station.
Miller sounded the emergency alarm, calling all of the fire engines in Boston. Although many of the Irish had left the scene, the fire companies continued to come as called. As the fight continued, local Yankees and Irishmen joined the row. Eventually 1000 people were included in the melee, though no one was killed. Several houses were broken into and vandalized, and the rioters launched rocks and other missiles at each other.
The fight was broken up when Mayor Samuel A. Eliot commanded 10 companies from the military to patrol the neighborhoods surrounding Broad Street.

https://thisdayinusmilhist.wordpress.com/2005/06/12/june-11/