The Declaration's most famous sentence reads: "We hold these truths to be self-evident, THAT ALL MEN ARE CREATED EQUAL; that they are endowed by their Creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness." Even today, this inspirational language expresses a profound commitment to human equality.

This ideal of equality has certainly influenced the course of American history. Early women's rights activists at SENECA FALLS in 1848 modeled their "DECLARATION OF SENTIMENTS" in precisely the same terms as the Declaration of Independence. "We hold these truths to be self-evident," they said, "that all men and women are created equal." Similarly, the African-American anti-slavery activist DAVID WALKER challenged white Americans in 1829 to "See your Declaration Americans!!! Do you understand your own language?" Walker dared America to live up to its self-proclaimed ideals. If all men were created equal, then why was slavery legal?

http://www.ushistory.org/us/13a.asp

This statement became the ultimate catalyst for the correction of many injustices that were prevalent at the time in which it was written.

Theism and belief in equal creation has been proven to have corrected many injustices whereas on the other hand evolution and atheism has served as the catalyst for greatest injustices and horrors in history.