Today is the fifth annual Stand Against Racism—a movement that aims to shed light on the pervasive forms of racism that still exist in our country and eliminate them by celebrating our diversity.

In August 1963, during the height of the civil rights movement, more than 250,000 people gathered in Washington, D.C., to demand racial justice. Martin Luther King, Jr., delivered his famous “I Have a Dream” speech to the crowd on the steps of the Lincoln Memorial, driving home the importance of racial equality with optimistic hope for the future.

We’ve come a long way since then, but there is still more work to be done. By raising awareness of the injustices enacted upon our fellow citizens every day, Stand Against Racism dreams of the same world Dr. King did in 1963.

Issued as part of the To Form a More Perfect Union pane in 2005, the stamp art is a detail from “March on Washington” by Alma Thomas.