Let me start by saying that I appreciate the quality of articles and highly recommend that you subscribe to their service in order to support their efforts of publishing high quality news stories.
That being said, there are undoubtedly some people that will never pay for a subscription or maybe just can't afford it. That's the reason I wrote a user script to bypass the paywall. Install it and let me know what you think. Links are below.
Install from GreasyFork:
https://greasyfork.org/en/scripts/38567-washinton-post-paywall-bypass
Install manually from Github:
https://github.com/deelawn/user-scripts/raw/master/washingtonpostpaywallbypass.user.js