This is simply not factual, it is an information availability bias. America is one of the most publicized nations, and sunlight is one of the best disinfectants. By any academically rigorous measure, the US ranks high in ethics, along with most other western style democratic systems.
Tell that to the people that were killed by American military in Iraq, Afganistan, Libya, Syria, Pakistan, Yemen and probably other places I am forgetting.
A country like America that has been murdering people in many wars around the world without hesitation is unlikely to take my privacy seriously. They don't respect my right to live, do you think they will respect my right to privacy?