The state Constitutional Convention of 1864 authorized greater civil freedoms to blacks within Louisiana, but did not provide for voting rights for any people of color.
Free people of color, who were
mixed-race, had been an important part of New Orleans for more than a century and were established as a separate class in the colonial period, before United States annexation of the territory in 1803. Many were educated and owned property, and were seeking the vote. In addition, Republicans had the goals of extending the suffrage to
freedmen and eliminating the
Black Codes passed by the legislature. They reconvened the convention, and succeeded in incorporating these goals.
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Democrats considered the reconvened convention illegal, as they said that the voters (although then limited to whites only) had accepted the constitution. In addition, they argued legal technicalities: the elected chairman Howell had left the original convention before its conclusion and was therefore was not considered a member, the constitution was accepted by the people, and the radicals, only 25 of whom were present at the convention of 1864, did not make up a majority of the original convention.
On July 27, the black supporters of the convention, including approximately 200 black war veterans, met at the steps of the Mechanics Institute. They were stirred by speeches of
abolitionistactivists, most notably
Anthony Paul Dostie and former
Governor of Louisiana Michael Hahn. The men proposed a parade to the Mechanics Institute on the day of the convention to show their support.
It is not known which group fired first, but within minutes, there was a battle in the streets. The black marchers were unprepared and many were unarmed; they rapidly dispersed, with many seeking refuge within the Mechanics Institute. The white mob brutally attacked blacks on the street and some entered the building:
The whites stomped, kicked, and clubbed the black marchers mercilessly. Policemen smashed the institute’s windows and fired into it indiscriminately until the floor grew slick with blood. They emptied their revolvers on the convention delegates, who desperately sought to escape. Some leapt from windows and were shot dead when they landed. Those lying wounded on the ground were stabbed repeatedly, their skulls bashed in with brickbats. The sadism was so wanton that men who kneeled and prayed for mercy were killed instantly, while dead bodies were stabbed and mutilated.