Catholic social teachings have their roots in the Ten Commandments and the Beatitudes.
One would think, watching this video, that every person, everywhere, would unite with all others behind these teachings. However, Catholic Social Teachings are the reason that the Church is attacked from so many quarters, including, sadly, from the pews and even from behind the altars of its own parishes.
Everyone has someone they want to exploit, abuse or even kill for their own privilege. This impulse is evil from its core, and like all evil it responds to anything that seeks to limit it with anger and rage.
I think the reason for this is that, by defining other people as not human enough to matter, and taking on themselves to power to kill and exploit them, they have already aligned themselves with the darkness.
And the darkness hates the light, even it is just a flash of the tiniest flame of another person telling them that they are wrong.
This beautiful video describes Catholic Social teaching with colors.
Watch it and pray that Kingdom come, His will be done.