Ideological intolerance is part of it, but it's clearly not the only part, given that the very first point in her slide is "this is not work for white folks to lead", i.e. she doesn't want white allies. I don't see how much more explicit this lady can make the fact that she hates white people as such.

As for German or Russian philosophers - that seems far fetched. This is an American phenomenon, and in its explicit and mainstream form, it is a fairly recent one.