Of course, right-wingers are not going around blowing up stuff in the name of Trump. Apparently the term referenced is
extremist for these particular kind or types of groups (excluding individual thought and food for thought). This is far more representative of the political left-wing movement as we see protesting all over the world (if one wants to correctly point fingers). What is being done about it? Zilch. Sister I'm a Poet, the article is referring to the Christian Identity Movement (i.e., white supremacists, KKK) specific. As stated in an other post, there is nothing Christian or right about them. It is probable their (CSIS) source of information comes from the FBI report known as Project Megiddo that goes back to 1999! The research methods may not have changed. Unfortunately, this report lumps and paints together any Christian, conservative, patriot with a broad brush. They aren't going around and blowing up stuff either. The report throws the baby out with the bath water. This is not objective data or research by any means. Perhaps the research methods have not changed after all. When you review the top ten, you can only scratch your head and see the "bias" seep clear through the report.
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