http://www.pbs.org/wnet/religionandethics/week735/special.html
The above link is the third of a series on Evangelical Christians in America. This is about the impact of the group. here is a quote:
"It's extremely influential. It's certainly the most rapid-growing of all of our religions. It's had an enormous impact on the society. Just look at who the President of the United States is."
"Evangelicals can't ignore the culture. Their whole religious sensibility is based upon meeting the culture halfway. At the same time, American culture -- just like American religion -- is an enormously powerful force. It will change religion, just as religion will change culture."
"The biggest thing that bothers me about culture is the "no fear" thing. I think it came in with THE SIMPSONS -- that you don't fear adults. There is no respect for authority, and I think it has slowly torn away at our youth."