Martin Luther King challenged the conscience of my generation, and his words and his legacy continue to move generations to action today at home and around the world. His love and faith is alive in millions of Americans who volunteer each day in soup kitchens or in schools, or who refused to ignore the suffering of millions they'd never met in far-away places when a tsunami brought unthinkable destruction. His vision and his passion is alive in churches and on campuses when millions stand up against the injustice of discrimination anywhere, or the indifference that leaves too many behind.