How about these two pieces published within about a week of each other?
https://www.washingtonpost.com/news/fact-checker/wp/2017/01/...
https://www.washingtonpost.com/posteverything/wp/2017/01/23/...
You'll note that the two stories are directly contradictory. The claim made by the WaPo is stronger than Senator Sanders' and yet Senator Sanders received 4 Pinocchios for the claim.
I also like FAIR's analysis of the WaPo's opinion leanings (though it leaks over to supposed factual reporting too): http://fair.org/home/washington-post-ran-16-negative-stories...