Yesterday on HBO's Last Week Tonight with John Oliver, Oliver explained net neutrality and encouraged people to urge the FCC not to undo the 2016 rule by visiting www.gofccyourself.com. The site takes a minute or so to open, so be patient if you want to comment. Then click "Express" on the right-hand side of the page.
You can watch the episode here. It's an informative and amusing 20 minutes.