you can take this position about literally any power that has ever existed. it doesn't change the fact that during the period of US leadership the world has had objectively fewer wars and the greatest degree of economic growth in history, thanks in no small part due to that very leadership eg in establishing the UN. that doesn't mean it's perfect or hasn't done carried out many actions that may seem reprehensible from the political norms of our contemporary moment, but thinking of it as simply an 'oppressor' lacks nuance to such a degree that it's essentially adolescent.

you make the mistake of assuming that because your political opponents think america is good, it must be bad. hideously common sentiment these days, though.