Features three future famous stars: Jon Voight, Candace Bergen and David Carradine. Bergen and Carradine have famous fathers, and in decades to come, Jon Voight would become a famous father of a very famous star (Angelina Jolie).
Michael's angered reluctance to being a "cop" (security guard) at the college is the sign of the times when, especially for college students and the youth culture in general, cops weren't popular, and this episode takes place on a college campus.
Singer Anita Sheer, who had made appearances on Jack Paar and other shows, plays one of the student protesters, and she also leads the protest songs, actually playing the guitar and leading the songs (her strong voice louder than anyone else).
The adversarial attitude of the campus police toward the student body, as depicted here, was not always the case in the 1960s. In some cases, their primary role was to protect the students as well as campus property, and was recognized as such and appreciated by the students.