Note this: I saw this story when it first posted and the headline was "Smooth No More: Jazz Gets Political" (which is six different kinds of stupid all by itself) but when I checked back a couple hours later they somehow slipped OWS in there. Absolutely random and definitely not the original impetus for the article.
& I don't think it needs to be said that political jazz was made all through the 70s, 80s, 90s, and 00s. For that matter saying that jazz took an "easy listening" bent in the 80s is totally odd, like saying that Peter Cetera-era Chicago wholly characterized rock and pop music in the 1980s.