do the kind thing. this week we are revisiting stories of remarkable people changing our world as part of our series champions for change. for chris cuomo that person is a 13-year-old poet named mattie steponic. his message of peace and hope was for our country and his words have stayed with chris to this day. >> if we choose to make peace a reality and spread it throughout the world, and get involved we will have peace. >> never met anybody like mattie