2: Challenging Binary Systems and Constructions of Difference Last updated Save as PDF Page ID 150018 Miliann Kang, Donovan Lessard, Laura Heston, and Sonny Nordmarken University of Massachusetts Amherst via UMass Amherst Libraries 2.1: Introduction- Binary Systems 2.2: Gender and Sex – Transgender and Intersex 2.3: Sexualities 2.4: Masculinities 2.5: Race 2.6: Class 2.7: Alternatives to Binary Systems 2.8: The Sex,Gender,Sexuality System 2.9: References- Unit II Thumbnail: Nekima Levy-Pounds at Black Lives Matter march, April 2015. (CC BY 2.0; Fibonacci Blue via Wikipedia ).