1) Microaggressions are subtle verbal and non-verbal slights that communicate hostile, derogatory, or negative messages to target persons based on their marginalized group membership.
2) Examples of microaggressions discussed in the document include making assumptions of criminality based on race, dismissing gender accomplishments, and using incorrect pronouns for transgender individuals.
3) Experiencing microaggressions can negatively impact physical and mental health as well as academic performance and career advancement, particularly for students from underrepresented groups in technology fields.