"The U.S. is the humitarian to the world. We've proven that countless times."
The American people, perhaps. Various administrations have not demonstrated that.
If American people genuinely believe they live in democracy and choose their government that acts on their behalf and with their permission, it means American people are as guilty of atrocities committed by various US governments, as the US governments/ruling elites.
The American people are in the same situation as you and your country. What the government does is not a reflection of majority will. Changing things is difficult due to the vast resources of 'the powers that be' to obfuscate, change topics and impose new problems before old ones are settled. People have personal lives to live and cannot keep up the energy to investigate, organize and act.
In an absolute sense, it is correct that they would be included in the guilt. If reasoning wants to be so unmerciful, have a field day.
And, yes, Dresden was just as bad.