Frederick Douglass, born into slavery, was an abolitionist, human rights and women's rights activist, orator, author, journalist, newspaper publisher and social reformer. Below is an excerpt from a speech he gave in Rochester, NY on July 5, 1852.
What, to the American slave, is your 4th of July? I answer: 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. To him, your celebration is a sham; your boasted liberty, an unholy license; your national greatness, swelling vanity; your sounds of rejoicing are empty and heartless; your denunciation of tyrants brass-fronted impudence; your shout of liberty and equality, hollow mockery; your prayers and hymns, your sermons and thanksgivings, with all your religious parade and solemnity, are to him, mere bombast, fraud, deception, impiety, and hypocrisy -- a thin veil to cover up crimes which would disgrace a nation of savages. 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.
For the full speech see http://www.historyisaweapon.com/defcon1/douglassjuly4.html