Richard, I think the correct term would be nationalism or jingoism .

America is one of the most racially diverse nations on the planet.
I think that most Americans take a deserved pride in the accomplishments of our nation in a scant 250 years. We created a political and economic system that has created the greatest prosperity in human history while adapting and changing to many incredible challenges such as slavery, civil rights, women's rights, immigation, handicapped people's rights, world wars, freeing millions from communist oppression, technology, etc. etc. And today we continue to debate abortion, gay rights, genetic engineering, terrorism etc.
Regardless of personal agenda people continue to participate in the process and respect the rights of others to participate without fear of being murdered or imprisioned. It is certainly not a perfect system, but very attractive as evidenced by the millions of people trying to get here every year.
Being the biggest guy on the block we are kind of in a no win situation. If we interfere with others we are blamed for imperialism, if we ignore them we are blamed for indifference
I think that most Americans genuinely wish all others to experience the same happiness and freedom. Sometimes we are not successful in helping, but I do not see any grand American conspiracy. I admit that I am not cynical about the country and as an educated white male I enjoy most of its perks, but it is my experience in working with those less fortunate that people just want a fair chance. I pray and work regularly to see that that is just what happens in this country. After all, why would you fight a war if you could go to Disney World
Maybe you would get more response on the debate board. Many people have no idea how we are perceived overseas.
Best Wishes,
David