The first line in their chronology uses terms like 'bourgeois' - a loaded term that is exclusively used by Communists and Marxists. I wouldn't trust it as a source for a middle school essay.
I'm sorry you don't see why an ideological advocacy organization would be de-prioritized for neutral search queries by a search engine. If you don't get it, I cannot bridge that gap for you. A Marxist perspective on the Russian Revolution is interesting and there's value to it but it has to be rooted in that context, otherwise it's just dishonest.
