They're constantly promoting the topics of critical race theory and BLM which one can easily lump in with other Marxist mass movements. Whatever the Biden administration feels is important tends to be what they cover - so right now it's all about race, how shitty America is, gun violence, LGBTQ+, etc... They never talk bad about the federal government, and they only give one side in any debate a platform - those who agree with their sentiments. No one else gets airtime.

I guess if you believe everything the federal government tells you, and you believe the federal government is a benign hegemon, then you'd have a tough time classifying NPR's content as misinformation / un-American. I don't fall into that camp so many of NPR's claims are debatable and the fact that the only give one side a voice and push for a neoliberal agenda, makes them anti-American in my humble opinion.