American Values?

What are the strongest values of our society which I can insult to get
the outrage without violating any laws?  Also I WILL NOT insult
religeous feelings of Americans.

In 1999 an "art" which attacks Catholic feelings brought the "artist"
lots of publicity but I would not go THAT LOW:

http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=%2B%22Virgin+Mary%22+%2Bdung