Ask HN: How can a software engineer help fight income inequality?

As a tech worker, I get paid multiple times what some other people live off of. In present-day American society in particular, we've reached a local peak of income inequality, which has been at least partially contributed to by the tech industry. My question is, how can I use my skillset to help address this? Does anyone know of nonprofits, open source projects, etc. that are working on this problem and could use my skillset?