According to Douglass, all
enslaved people are unable to experience the joy of the celebration.
To add, Frederick Douglass <span>was an </span>African-American<span> <span>social reformer, abolitionist, </span></span>orator<span>, writer, and </span>statesman<span>. After escaping from </span>slavery<span> <span>in
Maryland, he became a national leader of the </span></span>abolitionist<span> movement in
Massachusetts and New York, gaining note for his dazzling oratory and
incisive antislavery writings</span>.
In "What to the Slave Is the Fourth of July?"Frederick Douglass argues that enslaved people cannot experience the joy of the celebration of the Fourth of July due to their enslaved condition. He makes a parallel between the fight for independence of the colonists and the fight for freedom of slaves and abolitionists. He also says that the celebration of "American" values such as equality, freedom, liberty and citizenship is an offence to slaves, as they do not enjoy any of these benefits. It is one of Douglass's most famous texts.
I would say that sometimes you would not 'identify' a mistake in your head. Also if you read it out loud you might realize how it does not make sense in your sentence.