I was once "caught" by the Vicar (rightfully so, as it happens) for obliquely questioning the veracity and commitment of the group related to their "political" songs. I no longer have any such questions.

By the way, I thought their harmonies and arrangments were among the tightest in the business during their heyday. I first heard them via Harry Belafonte in a Carnegie Hall Concert album way back when. Odetta and Miriam Makeba were also first revealed to me on that disc, which I still have.