Today In History: The Bloodiest Race Riot in History
The riots were the largest civil insurrection in American history.
President Abraham Lincoln diverted several regiments of militia and volunteer troops from following up after the battle of Gettysburg to control the city.
The rioters were overwhelmingly working-class men, primarily ethnic irish.
They resented that the draft spared wealthier men, who could afford to pay a $300 commutation fee to hire a substitute.