The fact that the author frames this, without context, the way he did seems dishonest.
https://ubwp.buffalo.edu/ccvillage/wp-content/uploads/sites/...
"The first member of each group should now display the card so that the small group can see the identifying word. During the next three minutes, the remaining group members are to take turns expressing stereotypical remarks about the category of persons named by that sign. The remarks do not necessarily need to be reflective of opinions held by the group members but may reflect things they may have heard or seen growing up in your family, at school, at work, or in the media."
https://www.uh.edu/cdi/diversity_education/resources/activit...
https://www.skillsconverged.com/FreeTrainingMaterials/tabid/...
https://studentlife.mit.edu/sites/default/files/Diversity-ba...
https://www.ouch-video.com/ouch_stereotypes.html
https://officevibe.com/blog/diversity-and-inclusion-activiti...
https://www.yadvashem.org/yv/en/education/international_proj...