Something benefiting you doesn't make it wrong? The US compared to the other powers of the time extracted much less wealth to its conquered territories, and genuinely benefited them in a lot of ways. Compare the US to what the USSR did to Mongolia, Eastern Europe, and Central Asia. Or, compare the US to what France, the Netherlands, Belgium, and Portugal did trying to hang on to their colonies and extract as much wealth from them as possible. Not to mention how many citizens of those countries are proud of that! The US obviously did engage in disgusting acts at the time, particularly in Vietnam, in support of the KMT, and genuine imperialism in Latin America. But- the Marshall Plan is not anywhere near on those levels.
We’re openly and emphatically racist, as a country. We simultaneously reject immigration while requiring immigrants to be used as borderline slave labor to ensure our produce doesn’t get too expensive.