I don't think most Americans are bullies and most believe in live and let live. The point he is making is that Americans of old were people who took risks to make it in a new and dangerous country and had to be self reliant. Most came to escape poverty and oppression and now people like Bush have forgotten this and want to impose their "new American values" on the rest of the world. Instead he is creating oppression, bloodshed and is making the rest of the world hate us.Most Americans have little knowledge of the rest of the world outside North America and have no desire to invade it or impose their values on it.

We had better live as we think, otherwise we shall end up by thinking as we lived. - Paul Bourget