Because it’s the cause celebre today. The causes are often cultivated by different loose organizations like influential people, moneyed people, media and eventually elementary schools. Sometimes the issues are leftist, sometimes rightist. Today leftist ideas are in ascension, ten years from now, who knows.

Ten years ago it wouldn’t have been a thing. There were other issues. These things come and go like fashion. Twenty thirty years ago it was self determination of nations, today its “there should be no borders” which is the opposite of self determination of nations.