Ask HN: How can I use my expertise to better my community?

With recent events and a relatively free summer ahead of me, it feels like an excellent time to give back and support causes I feel are important. I've been browsing local volunteering sites, but wanted to see if anyone knows of volunteer opportunities that I should look for or reach out about that specifically utilize a CS skillset. Or, examples of how people used CS-related skills to contribute to a cause.