He’s posted a 5,700 word essay (manifesto) on his Facebook page. It covers his thoughts on isolationism (isolationism is bad, he says).
The takeaway here is that yet another billionaire is expressing his opinion about U.S. political activities. Will Mark Zuckerberg decide at some point that more than words are needed to effect change, much like our current president?
If he does, that would be a very interesting campaign.