Let's get right to the president. He came here, he was with allison, the granddaughter of the school principal. The president comforted the families yesterday. Then delivers the speech. Also... See More
Let's get right to the president. He came here, he was with allison, the granddaughter of the school principal. The president comforted the families yesterday. Then delivers the speech. Also comforting, but angry as well. I come the offer the love and prars of a nation. Mere words can not match the depths of your sorrow. Nor can they heal your wounded hearts. You're not alone in your grief. Reporter: Consolation first. And then, a call to action. This is our first task. Caring for our children. If we don't get that right, we don't get anything right. Can we truly say, as a nation, that we're meeting our obligations? The answer is no. These tragedies must end. And to end them, we must change. Reporter: President obama, stricken and stern, promised to make america safer for our children. I'll use whatever power this office holds to engage my fellow citizens in an effort aimed at preventing more tragedies like this. Are we really prepared to say we're powerless in the face of such carnage? Reporter: Across the audience, tears became sobs, as the president remembered those who shielded the children. Dawn hochsprung, mary sherlach, lauren rousseau, vicki soto, rachel davino and anne marie murphy. Reporter: Then one by one, the 20 little ones. Lives cut short in the first grade. Charlotte. Daniel, olivia. Josephi josephine, ana. Dylan, madeleine, catherine. Chase. Jesse. James. Grace. Emilie. Jack. Noah. Caroline. Jessica. Benjamin. Avielle. Allison. Reporter: A president's tribute, offering comfort to the families, encouragement to newtown, and a challenge for all of us. And the first two of those victims will be laid to rest today. Noah pozner, jack pinto.
This transcript has been automatically generated and may not be 100% accurate.