Which line from "what to the slave is the fourth of july? ” supports douglass’s claim that the fourth of july is not a cause worthy of celebration by all?

"Fellow-citizens, above your national, tumultuous joy, I hear the mournful wail of millions! whose chains, heavy and grievous yesterday, are, to-day, rendered more intolerable by the jubilee shouts that reach them."

Explanation:

"What to the Slave is the Fourth of July?” by Frederick Douglas is a speech given on July 5, 1852 in an address to the Rochester ladies Anti - Slavery Society. Referring to the independence celebration of the Americans, he raised the issue of the slave trade within the United States even after it's so called independent. While the white Americans may be celebrating this liberty from the colonizers, but it is not a cause worthy of celebration for the African - American citizens of the same nation. The lines "Fellow-citizens, above your national, tumultuous joy, I hear the mournful wail of millions! whose chains, heavy and grievous yesterday, are, to-day, rendered more intolerable by the jubilee shouts that reach them" supports this claim that the Fourth of July is not a cause worthy of celebration for all, especially the African - Americans.

the correct answer is:

this is an example of the writer telling through description rather than showing through dialogue.

sometimes writers like to explain explicitely what's happening instead of adding dialogues of the situations., which is the case in this passage,