This document discusses four major forms of discrimination or "isms": sexism, racism, ageism, and heterosexism. It provides examples of how each ism manifests in society through questions individuals are encouraged to reflect on regarding their own experiences. Specific behaviors and attitudes associated with each ism are defined, such as negative stereotypes, prejudices, and inequitable treatment. The document also addresses abusive, hurtful, and stigmatizing language and how certain words can perpetuate discrimination or harm marginalized groups. Overall, the summary aims to raise awareness of social injustices and promote more inclusive, respectful treatment of all people.