Use a random method for selecting students to answer questions in order to give all students an equal opportunity to participate.
Use humor in class that does not rely on race, gender, ability, class, etc. because those jokes are made at the expense of a diverse set of students and create a very unwelcome classroom environment.
Make sure not to ask students of color questions that essentialize their entire race or racism, don’t make the assumption that students of color are experts on all things related to their culture or racism.
Don’t express shock or “compliment” students for breaking stereotypes associated with their race or gender; these statements are microaggressions, they discriminate against these students, often unintentionally.
Use the words women and men (or boys and girls) instead of the words male and female when talking about things that are gender-specific to respect the difference between the sex and gender of your students.
Say black people/students/etc instead of blacks because using black as an adjective emphasizes the humanity of black people.