To hear Billy Bragg extol the practical value of socialist principles—which is to say, collective provision as a necessary function of any democratic government worthy of the name—is invigorating. Songs may not change the world, but they can grease the gears. And unlike so many people making noise about this subject right now, Bragg (armed with an unimprovable East London accent) makes it sound not only like common sense, but like it’s right around the corner if we only pull together.