Dominicans have a great tradition of working for human rights. Recently some of our friars presented at a conference at George Mason University to commemorate the 500th anniversary (4th Sunday of Advent 2011) of the historic homily of Fr. Antonio Montesinos outside the cathedral in Santo Domingo. His famous first words of that homily are engraved at the base of the statue, "Con que derecho?" (With what right?) This preaching converted Bartolomeo de las Casas, who would later convert and enter the Order of Preachers, thus becoming a great preacher who worked for justice and an end to the slave trade of the New World.
this powerful statue of Fr. Antonio Montesinos OP
overlooks the harbor in Santo Domingo
UPDATE: Interview from Vatican Radio