The Baltimore riot of 1861 (also called the "Pratt Street Riots" and the "Pratt Street Massacre") was a civil conflict on Friday, April 19, 1861, on Pratt Street, Baltimore, Maryland. It occurred between antiwar "Copperhead" Democrats and other Confederate sympathizers on one side, and on the other, members of Massachusetts and Pennsylvania state militia regiments en route to the national capital at Washington who had been called up for federal service. The fighting began at the President Street Station, spreading throughout President Street and subsequently to Howard Street, where it ended at the Camden Street Station. The riot produced the first deaths of Union volunteers by hostile action, although caused by civilians, in the American Civil War. Civilians among the attackers also were killed.

Background

In 1861, many Baltimoreans did not support a violent conflict with their southern neighbors, and some of them strongly sympathized with the Southern cause. Baltimore as it existed in 1861 was described by historian David J. Eicher as a "largely pro-Southern city". In the previous year's presidential election, Abraham Lincoln had received only 1,100 of more than 30,000 votes cast in the city. Lincoln's opponents were infuriated (and supporters disappointed) when the president-elect, fearing an infamous rumored assassination plot, traveled secretly through the city in the middle of the night on a different railroad protected by a few aides and detectives including the soon-to-be famous Allan Pinkerton in February en route to his inauguration (then constitutionally scheduled for March 4) in Washington, D.C. The city was also home to the country's largest population (25,000) of free African Americans, as well as many white abolitionists and supporters of the Union. As the war began, the city's divided loyalties created tension. Supporters of secession and slavery organized themselves into a force called "National Volunteers" while Unionists and abolitionists called themselves "Minute Men".

The Battle of Fort Sumter had occurred on April 12–13, one week before the riot. At the time, Virginia, North Carolina, Tennessee, and Arkansas had not yet seceded from the U.S. In fact, before Lincoln's demand for 75,000 soldiers with which to put down the rebellion, Virginia, North Carolina, and Arkansas had elected secession delegations which had voted to remain in the Union and Tennessee had held a referendum of the people to determine whether to elect a secession delegation, and had voted by about 2/3 majority to not even consider the matter. The other slave states of Delaware and Maryland, as well as Missouri and Kentucky (later known as "border states") were in flux. When Fort Sumter fell on April 13, President Lincoln sent telegrams followed by letters to all the governors of states that had not seceded, calling for 75,000 troops with which to repossess U.S. property in the South. After receiving this communication, the Governor of Virginia directed Virginia's Secession Delegation to reconvene. Just nine days earlier, on April 4, 1861, Virginia's secession delegation had voted to stand with the Union by a vote of 90 to 45. However, in light of the call for troops, Virginia's Secession Delegation did meet once more and took another vote. On April 17, the new vote was 85 to 55 that Virginia would secede, with the condition that a referendum of the people would be held and secession would occur only if the people confirmed the vote of the Delegation.