The “report” is an embarrassment to DHS, which has done so much good work over the past seven years. The only thing of interest about it is the identity of the author or authors, and whether they rode into town with the new president. The level of analysis is so childish and the conclusions so laughable as to tell us nothing at all except that the government employs some very, very limited “analysts” with big political agendas.
There are indeed right wing extremists in the U.S., a few of whom are dangerous. They are nowhere near as numerous or as dangerous as the jihadists here and around the globe. When Islamist terrorists strike at Americans or American interests here or abroad, it will be a fair question why DHS was allowed to waste its time and resources on such dribble.