I think people often use "liberal" to mean left-leaning, whereas it's really more like center-right Democrat. If NPR were left-leaning, for example https://www.npr.org/2022/11/21/1137640529/railroads-freight-... wouldn't be titled "Largest rail union rejects contract, stoking fears of a strike" and have a first paragraph of "On the eve of the holiday season, workers at the heart of the supply chain are once again threatening to strike.". Fear the threatening workers. A left-leaning report would emphasize the struggle the workers are having negotiating with the exploitative corporations running the railways, and how Biden and congress pretend to be pro-labor but vote against the workers.