Dr. D, the writer is referencing a well covered story from a couple weeks back. Use Google, as you suggest in another comment, if you don't recall it.
Here's a NY Times article about it: http://www.nytimes.com/2016/11/21/us/alt-right-salutes-donald-trump.html?_r=0
Here's another relates story from PBS: http://www.pbs.org/newshour/bb/white-nationalist-leader-wants-go-mainstream-racist-movement/
Not to dismiss the radical examples you cite in another post (as those are very troublesome, indeed), one would be incorrect to dismiss what is happening in the U.S. now and how it may bleed over into Canada.
The people referenced are much close to the ears of those in power than the Islamists from your examples. And that's the scarier point, for me.