and president obama's symbolic link to dr. king. stay with us. >> it's time for us to stand up now and renew this dream. that's what we got to do. i was affected by the trayvon martin situation. i was affected by newtown. i was affected by sandy hook. i'm affected by those things, so it's time for us now to pick up. >> thank you for being here and to encourage you young and old, men and women to understand that progress can only be measured with how far we have to go.