A day that reveals to him, more than all other days in the year, the gross injustice and cruelty to which he is the constant victim. He touches on the history of the American Revolutionaries' fight for freedom against their legal bondage under British rule. He tells the audience that he supports the actions of these revolutionaries. Douglass thereby sets up an argument for the freeing of slaves. He reminds the audience that, in 1776, many people thought it was subversive and dangerous to revolt against British tyranny.
He says that, if anything, many churches actually stand behind slavery and support the continued existence of the institution. Douglass equates this to being worse than many other things that are banned, in particular, books and plays that are banned for infidelity.
There is a mistake with the use of signs in the sentence. The mistake in the sentence is that the sentence before "she said" and "he said" will be kept in a double comma, so the correct sentence will be