Viet Nam: Some help for a paper please

I'm writing a paper for a class i'm taking regarding the Viet Nam war. Topic of the paper is this: How has the popular culture of the United States been shaped as a consequence of Viet Nam? Also, what lessons have been drawn as a consequence of how the popular culture has been shaped, and to what purposes have they been applied?

I already have a few ideas and I'm not looking for a free roll here. Just some suggestions I can include in the paper. Any help would be greatly appreciated.

Thanks in advance.