An examination of six landmark speeches delivered by America's 44th president, President Barack Obama, featuring insights from historians, members of Obama's inner circle and speechwriters. Included: his keynote address at the 2004 Democratic National Convention; his 2008 Democratic National Convention acceptance speech; his eulogy after the 2012 mass shooting at Sandy Hook Elementary School; and his commemoration of the 50th anniversary of the Selma to Montgomery civil rights marches,