Tolkien is one of my favorite authors. Though I avoid most fantasy, I love his. And his values and the overall stories oppose racism. But his letters and the tropes in his stories sometimes support racism.
http://tolkiengateway.net/wiki/Racis...kien%27s_Works
https://tolkienaboutscifi.wordpress....-lotrs-racism/
I tend to prefer books which are part of a series. It allows more stories, more character development, and more worldbuilding than if they're not.
I often look for books with disabled characters. I am struggling with my own issues, I want characters like myself, and I want the same for other people with other disabilities. Same with lesbian characters.
And yes, I look for books which try to support good causes. I'm considering a charity bundle which would support Doctors Without Borders.