One of the roots, at any rate. And far from 'not mincing words', Tucholsky could be very deceptive before moving in on his real target! Songs like "Anna Luise" or "Radieschen" are a joy to me precisely because they're not simply obvious and clumsy propaganda (as others often are), but works of art. Like Brecht, Mehring, Kästner and others, he is a master of both approaches. (Yes, even Brecht had his tender side ...)