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??????9?????????20??????????????? ??????????9???????15????,?????????????????????????,??????????????????????????«??»(The Desert News)?17??,??????????????,??,????

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???(NPR)??????17????,?????????????????(Soufan Group)??????????????????????????????????(Colin Clarke)?????????????,??,????,?????????????

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?????????????????????,????????????,????,?????????????????(University of Maryland)???????????(START Center)?????????????????????????????(Gary LaFree)???:“?????????????,?????????????????21????????2015????2016???(?????????)???”

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?,????????????????(CBS News)????????????,?????????????????,??????????????????????????

?????,????«?»???????????????(PBS NewsHour)???(NPR)????????(Marist)???,?????????????????????20%?,?????????????????????,????

????,?????????????????????(Ryan Cowley)?????,????????2020??,????29???????????????????20??????????,?“????”?????????????????????????????,?????:“?????,???????????????????????????????????,??????????(?)?”

??????????,???????????(NBC Washington)??,??,?????????????,?????????,??????

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??????????????????????????(American University)????????????????????????????,??????????“??,???????????????????”?

????(Polarization and Extremism Innovation Lab)??????????(Brian Hughes)???????????????????????,???,?????????????????,???????????????????????????????“???????????????????????,??????”?????????????????

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