University of Chicago sit-ins 

https://en.wikipedia.org/wiki/University_of_Chicago_sit-ins

“In paired tests, white applicants interview or apply to rent in a white-occupied building to learn that a unit is available. When black applicants follow, they are steered to black-occupied buildings or told that no units are available in the white-occupied building.” – Chicago Maroon. January 19, 1962. 
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“In the process of researching one of my cases, the University of Chicago in the 1950s and 1960s, I came across an interesting student sit-in during January of 1962. Students in a chapter of the Congress on Racial Equality (CORE) realized that the university had bought up a large number of private apartment buildings in Hyde Park and hired a real estate management company to steer and segregate tenants as part of a larger neighborhood management process to insulate the university from the expanding Black Belt (Arnold Hirsch touches on this in a chapter of Making the Second Ghetto). After some paired applicant testing to establish discrimination, CORE arranged a sit-in at the UofC administration building and the real estate management company offices that lasted for two weeks. I was surprised to find out how lines of support and opposition were drawn. It turns out one of the leaders of CORE was Bernie Sanders, an undergrad from New York who had transferred to Chicago for his degree (he mentions this in his political autobiography, Outsider in the House). Students were split on the issue. The faculty was largely opposed to the students’ action, preferring discussion and research on the topic of segregation and housing. And there were some other surprising discoveries I won’t go into here.” – LaDale Winling

[Students and the Second Ghetto: Federal Legislation, Urban Politics, and Campus Planning at the University of Chicago – LaDale Winling, First Published December 31, 2010 Research Article – https://doi.org/10.1177/1538513210392002]