I find it strange that the words Kurd or Kurdish does not come up once in this article.
Such is the fine line of reporting (which seemed to paint the picture in general) without spelling things out.
From Wikipedia, "The Yazidis ... are ... ethnically Kurdish."
https://en.wikipedia.org/wiki/Yazidis
The silence is defining because ...
Syria (Russia) has a "Kurdish problem".
Iraq (America) has a "Kurdish problem".
Turkey has a "Kurdish problem", and they're playing both Russia and America against each other.
Canada has been training and assisting the Kurds, so it would be both brave and consistent for us to step up.
But don't expect it because realpolitik is, well, a real thing and EVERYONE'S self interest is resulting in willful blindness.
https://en.wikipedia.org/wiki/Realpolitik
And we are members of the Anglo-American Empire.
Evil flourishes when good men (and women!) do nothing.