EZRA KLEIN – Democrates have two years to prove that the American political system can work. Two years to show Trumpism was an experiment that need not be repeated. Two years. This is the responsibility the Democratic majority must bear: If they fail or falter, they will open the door for Trumpism or something like it to return, and there is every reason to believe it will be far worse next time. To stop it, Democrats need to reimagine their role. They cannot merely defend the political system. They must rebuild it.