(The following are bits and pieces paraphrased from the above video to entice the video-weary reader to watch)
The coming together of subsidiarity (preferential option for local solutions) and solidarity (make up the heart of Catholic Social Teaching. Understanding this in a complete way, one can not say that big government is good or bad. It depends on the situation.
The mark of catholic thought across the board is, as Chesterton put it, that of bipolar extremism. At the heart of this is the incarnation. Jesus Christ is not just man, nor is he just God. Nor is he some kind of weird hybrid of the divine and human. Rather we would say He is fully human, and fully divine. Not one or the other, or a blending of the two, but both-and at the same time with equal vehemence.
This principle invades all of Catholic thought.
It doesn’t like a unipolar extremeism, or a bland moderation. It likes the both-and. Are we for subsidiarity? You betcha! All the way. We are totally for subsidiarity. Are we for solidarity? Absolutely. All the way. And it is the two of these shouted at the top of our lungs that is the mark of Catholic Social Teaching.