Invisible is a powerful anthology edited by Jim C. Hines on sexism, disability rights, gender and sexual orientation. All of the articles are thought provoking, eloquent and intelligent. They're all moving - sometimes funny and uplifting - sometimes sad and heartbreaking. My personal favourites were the ones by Ada Hoffman ( on autism) and Michi Trota (on race). You can buy Invisible on Amazon and on Kindle. Highly recommended!