Answer :
He meant that Americans were the biggest hypocrites in the world. You have to read his entire statement. Kind of hard to understand!
These words were taken from Frederick Douglas’ “Fourth of July” speech. He was an African American abolitionist; the full sentence is “for revolting barbarity and shameless hypocrisy, America reigns without a rival.” He’s basically saying nobody does slavery as horribly as the United States; his other words in the same speech are “There is not a nation on the earth guilty of practices more shocking and bloody than are the people of the United States, at this very hour.”
