Over the last few weeks, Democratic politicians haven’t been able to go out in public without members of their own base shouting at them to “do something” or “do your jobs”—meaning something, anything, that’s not just tweeting that Trump’s latest executive order is unconstitutional, or that Trump is bad. Unfortunately, the majority of the party’s leadership isn’t exactly rising to the challenge. For example, on Tuesday, in response to a recent Fox News segment about how the right has swallowed up the media ecosystem, Democratic Sen. Chris Murphy—who holds a Senate leadership position—simply conceded that “we are cooked.” Helpful! Since...