Ask HN: Opportunities for pro-bono work democratizing strong encryption

As I'm sure many of you are also feeling right now, I'm worried about the direction the US is taking toward total surveillance and loss of freedoms both on and offline. I'm already making donations to organizations like the ACLU, but I would really like to put my engineering skills to use on a project that could help fight back.

Is there any existing organization whose goal is building and marketing a highly distributed, open source messaging platform with end-to-end encryption, with good enough UI/UX that it's understandable and attractive to the average American?