Turning to the performers from a strong era of protest songs, Janis Ian has posted on Facebook about writing a song that she had an opportunity to sing with Joan Baez. Here is the start of the information:

A SONG FOR CHANGE
A few years ago I sat down with Jess Leary, one of my favorite co-writers, and we decided to write an anthem. It felt like the world was getting stranger every day. People were scared, feeling hopeless.
Writing "One In a Million" made us feel hopeful. It reminded us that no matter how hard things got, we were not alone.
         We are one, we are one in a million
         We are one in a million strong
         In my darkest night, I hold on to that light
         We are one in a million strong
A while later, I was asked to perform at a San Francisco event called "Fight the Right." When I found out Joan Baez would also be appearing, I asked if she'd sing it with me. Fortunately, Joan's a quick study, because we only had time for one short run through.
We sang it twice that night, with fellow musician Anthony Peterson helping out and the audience joining in as soon as they'd learned the chorus.
A short while ago Joan's long time personal assistant, Nancy Lutzow, let me know that she'd just uncovered a tape of us singing "One In a Million" at the San Francisco show. . .

One In A Million with a video added and mastering, on YouTube.