Intersectionality (or intersectional theory) is a term first coined in 1989 by American civil rights advocate and leading scholar of critical race theory, Kimberlé Williams Crenshaw.
It is the study of overlapping or intersecting social identities and related systems of oppression, domination, or discrimination. The theory suggests that—and seeks to examine how—various biological, social and cultural categories such as gender, race, class, ability, sexual orientation, religion, caste, age, nationality and other sectarian axes of identity interact on multiple and often simultaneous levels.
In other words, intersectional theory asserts that people are often disadvantaged by multiple sources of oppression: their race, class, gender identity, sexual orientation, religion, and other identity markers. Intersectionality recognizes that identity markers (e.g. “woman” and “black”) do not exist independently of each other, and that each informs the others, often creating a complex convergence of oppression (Leigh Chandler)
All the Women in My Family Sing by 
Freedom Is a Constant Struggle by 
Intersectionality by 
Modern HERstory by 
Sister Outsider by 
This Will Be My Undoing by 
