The Person You Mean to Be: How Good People Fight Bias

Probably a great introductory read for new allies. Chugh covers all the fundamentals of our cognitive biases and offers evidence-based suggestions for overcoming them. She won't cure a nazi MAGgot, but that's not her goal: she's aiming for those who recognize the problem but aren't sure how to help. To use her terminology, turn believers into builders.

Sad news is, the book was published in 2018.