Obama 2004 Speech

Barack Obama's admirers view him as one of America's great political speakers.  Not all would agree.  Here are some clips of Obama's 2004 Democratic Convention speech, along with some admiring analysis. 

This is the speech that lifted Obama from unknown status to "future presidential material."

What rhetorical technique stands out the most here?   Logos (appeal to facts and reason)? Ethos (establishing one's personal credentials with the audience)?  Pathos (connecting on an emotional level)?