Barack Obama

2004 Democratic National Convention Keynote Address

Now even as we speak, there are those who are preparing to divide us -- the spin masters, the negative ad peddlers who embrace the politics of "anything goes." Well, I say to them tonight, there is not a liberal America and a conservative America -- there is the United States of America. There is not a Black America and a White America and Latino America and Asian America -- there’s the United States of America.

Reputation has been used  by Obama when he speaks about America being one type of person rather than having mixed americans.  
Obama reaches out to the audience in the presentation  he uses good body language and points and uses his hands to explain his words. The whole speech is formal but he presents it in a way that looks informal but he still seems to be very serious about what hes talking about