If gospel choirs and anarchist collectives had anything in common, surely it was bashing the video channel and its skin-drenched paeans to mammon. Credit the groups’ shared evangelical impulse. With these two simple motivational anthems — each had a second verse same as the first — the groups sought unlikely fans outside their normal audiences. And they found them: Their albums went triple platinum, becoming the biggest ever sellers for, respectively, gospel choirs and anarchist collectives.