Well, that's how I see it :

The US keep claiming they are the 'good ones', that they want to spread democracy accross the middle-east, that they protect human rights and all that.
Yet, in reality, you see that they lie to the rest of the world to invade a foreign country, they erase cities from the face of earth with white phosphorus, put people who have not been proved guilty in jail for years and years, torture their prisonners or send them in dictatorship so they can be tortured by the local people, support some of the cruelest dictators on earth, and so on.

Now, you might try to deny it, but facts are here. A country that claims to be the White Knight of the modern world will obviously be judged on higher standards than the dictator of a poor, powerless country.