The riot took place outside the Mechanics Institute as black and white delegates attended the Louisiana Constitutional Convention. The Convention had reconvened because the Louisiana state legislature had recently passed the black codes and refused to extend voting rights to black men. As a delegation of 130 black New Orleans residents marched behind the U.S. flag toward the Mechanics Institute, Mayor Monroe, A confederate veteran, organized and led a mob of ex-Confederates, white supremacists, and members of the New Orleans Police Force to the Institute blocked their path. The mayor claimed their intent was to put down any unrest that may come from the Convention but the real reason was to prevent the delegates from meeting. As the delegation came to within a couple of blocks of the Institute, shots were fired but the group was allowed to proceed to the meeting hall. Once they reached the Institute, the police and white mob members attacked them, beating some of the marchers while others rushed inside the building for safety. The police and mob surrounded the Institute and opened fire on the building, shooting indiscriminately into the windows. Then the mob rushed into the building and began to fire into the crowd of delegates. When the mob ran out of ammunition they were beaten back by the delegates. The mob left the building, regrouped, and returned, breaking down the doors and again firing on the mostly unarmed delegates. As the firing continued some delegates attempted to flee or surrender. Some of those who surrendered, mostly blacks, were killed on the spot. Those who ran were chased as the killing spread over several blocks around the Institute. African Americans were shot on the street or pulled off of streetcars to be summarily beaten or killed. By the end of the massacre, at least 200 black Union war veterans were killed including forty delegates at the Convention.
The riot took place outside the Mechanics Institute as black and white delegates attended the Louisiana Constitutional Convention. The Convention had reconvened because the Louisiana state legislature had recently passed the black codes and refused to extend voting rights to black men. As a delegation of 130 black New Orleans residents marched behind the U.S. flag toward the Mechanics Institute, Mayor Monroe, A confederate veteran, organized and led a mob of ex-Confederates, white supremacists, and members of the New Orleans Police Force to the Institute blocked their path. The mayor claimed their intent was to put down any unrest that may come from the Convention but the real reason was to prevent the delegates from meeting. As the delegation came to within a couple of blocks of the Institute, shots were fired but the group was allowed to proceed to the meeting hall. Once they reached the Institute, the police and white mob members attacked them, beating some of the marchers while others rushed inside the building for safety. The police and mob surrounded the Institute and opened fire on the building, shooting indiscriminately into the windows. Then the mob rushed into the building and began to fire into the crowd of delegates. When the mob ran out of ammunition they were beaten back by the delegates. The mob left the building, regrouped, and returned, breaking down the doors and again firing on the mostly unarmed delegates. As the firing continued some delegates attempted to flee or surrender. Some of those who surrendered, mostly blacks, were killed on the spot. Those who ran were chased as the killing spread over several blocks around the Institute. African Americans were shot on the street or pulled off of streetcars to be summarily beaten or killed. By the end of the massacre, at least 200 black Union war veterans were killed including forty delegates at the Convention.