Well, their show was on National Proletariat Revisionism.....
..... no surprise that they dissed conservatives.
P.S. I hate NPR with a passion - I NEVER listen to it.
I remember about ten years ago I was out walking in a state park near my home, and I thought, what the heck, I'll listen to NPR and see if their programming was as lib/leftist as I had remembered. I listened to three different, one hour programs in a row. All three were decidedly leftist slanted. That was enough for me.
I have listened at different times, and they did have some interesting shows that weren't political. But they were few and far between.