Can Manifest Destiny be removed?

In class is question can America be separated from Manifest Destiny was raised. I do not believe it can be. Throughout American history, Americans have held this notion of exceptionalism about themselves, started among the Plymouth Rock settlers to modern day America. Americans have always seen themselves as "better" than others, and have used this thinking for various ends, be it thinking of blacks and indians as "subhuman" to justify slavery and extermination or resistance to immigrant groups, or giving aid to other countries. American popular rehtoric is full of claims of superiority, as is many nations, and Americans as a whole believe it.
I agree with SymbolSix in his statement "what other system do you want to live in". Possibly England ;) I agree with the American model, however this does not mean it is flawed or can be changed. As I have said earlier, we also need to be careful. We can not push cultural relativism too far. I don't not believe that all cultures are equal, merely understandable. But we must also take this with a grain of salt and avoid thinking that it is American's God given right or true calling to spread light, knowledge, civilization, etc. to the less priveleged people of the world. We have as much to learn from them as they do from us.