So not a blog, but one blog post?

That's certainly no indication that Firefox is first and foremost a social justice blog.

Sorry -- I'm just a casual commenter, not a bibliography, but here are some others to get you started:

- https://lmgtfy.app/?q=mozilla+blog+social+justice&iie=1

- https://blog.mozilla.org/en/?s=social+justice

- https://blog.mozilla.org/en/?s=gender

- https://blog.mozilla.org/en/mozilla/first-steps-toward-lasti...

- https://blog.mozilla.org/en/mozilla/leadership/mozilla-racia...

- https://discourse.mozilla.org/t/the-removal-of-the-dissenter...

- https://foundation.mozilla.org/en/blog/mapeo-helps-marginali...

- https://www.theverge.com/2015/8/24/9202067/mozilla-ceo-chris...

- https://news.ycombinator.com/item?id=28018772