Yes, without a doubt. I wouldn't be so quick to blame Christianity for it though - at least not exclusively. The down side of American culture has its roots spread wide and probably most grounded in general arrogance. It's just general human failings. You enjoy a great deal of success, you start thinking you are the rightful arbiter of what is right and wrong.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
Albert Einstein