Liberals are kept in a vacuum bubble of ignorance, by intent (and with the use of censorship). It’s the only way the Dems can win.Calling PBS liberal is flattering to them, as their staff is 95% progressive female and 100% progressive leftist, NEVER having a strong male figure on in any capacity nor EVER presenting the conservative POV. And when they do have any guys on their shows, they are all weak, young, small guys weighing about 130 pounds who look like the roughest thing they've ever done is pick up the phone to call for someone to come clean his gutters for him or put air in his tire. I've literally caught a few of their science programs LYING about the climate. And they NEVER question any of the ideology they present. If it isn't about promoting a progressive agenda, they don't even report on or cover it.
Liberals watching such liberal media as this anbd CNN, etc., are literally kept in a vacuum bubble of ignorance of anything outside the progressive ken.