America's system of values

I believe that America's system of values does not encourage people to destroy or neglect historical sites or structures. I do believe that there are a large amount of ignorant and disrespectful people in our country who think just because they're American's means that they can do whatever they want and get away with it, when that's not the case. Although America's system of values is different from any other country in the world and does give one somewhat of a sense of "imperialism" but i don't think that our system of values has anything to do with a person (or people) who would destroy a historical site for any purpose, unless a safety issue is involved. Neglection of historical sites on the other hand is slightly a different story, but i still can't understand how our system of values could prevent someone from taking a stand to help preserve historical sites and structures that our important to our countries history. Our countries system of values has diffenatley created a few "duds" as citizens in our society, i believe our country as a whole can overcome the reputation we've earned from other countries as being "lazy, self centered, power hungry or improper".