I assume they’re trying to out-do the old Soviet joke.

Preface to a new sex education schoolbook:
“Dear children. There are three kinds of love. First, there is the love between parents and children. We’re sure all of you are already familiar with that, so there is no need to discuss it here. Second, there is the love between two adults. Some suggest it might be too early to tell you anything about that yet. And third, there’s the love the People feel toward the Party, and that is what we shall discuss for the rest of this book…”