Intersectionality is a term coined by professor Kimberlé Crenshaw in 1989 to describe how different social categories interact, sometimes resulting in compounding effects and tensions. Her paper on the subject argued that discrimination specifically against Black women is different from general anti-woman discrimination or anti-Black racism. Instead, it involves the unique compound experience of both sexism and racism. Initially used in the context of discrimination law, the concept saw a resurgence in the 21st century among left-wing activists who broadened intersectionality to include categories such as class and sexual orientation.