Cisnormativity is the assumption that everyone is cisgender, or that being cisgender is the only "normal" gender identity. Cisnormativity puts pressure on people to conform to binary notions of gender expression and gender identity. Cisnormativity can manifest as cissexism, the biased belief that cisgender identity is the superior gender identity. Individuals, communities, policies, and institutions can perpetuate cisnormativity and cissexism, and thus marginalize transgender and gender diverse people and communities.