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Use "gadflies" in a sentence
"They tended to be the sort of persistently-involved residents newspapermen often refer to as "gadflies" - deeply, obsessively concerned about issues large and infinitesimal in the communities where they lived."
"What are so-called gadflies like Olbermann and Moyers afraid of?"
"This link is sort of off-topic but really not, as it's yet another case (as in the present one) of the media doing their level best to shout down "the critics" -- the nattering nabobs of negativism -- and then, years later, admitting that the "gadflies" were right all along, and that what looked like a scam, walked like a scam, and quacked like a scam was -- quelle surprise!"