Or the Indonesian genocide. Or giving Pol Pot diplomatic cover as soon as they saw him as an enemy to Vietnam. Or couping essentially every country in Latin America.
The "policeman" narrative has always been propaganda.
The "policeman" narrative has always been propaganda.
The key point is how they see themselves. The average American sees the US as "the good guys". This is not a self-image lightly over-turned. Regardless of how the rest of the world views them.
Or just reflects American views of what cops are for; thumping minorities.