This stems from John McAdams being suspended for public criticism of a teaching assistant, which should not be a suspendable offense, you would think. To make matters worse, the university demanded he apologize for speaking out (to which McAdams refused).
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Why Angela Davis Should Remember the Jonestown Massacre
Coming to a university near you
Before you find him on offer as a university speaker or course, you may want to read the meticulously documented story of Cop killer Mumia Abu-Jamal by former Accuracy in Academia executive director Dan Flynn.