The University of Michigan denied a student group’s permit for the annual Entheofest psychedelic festival, celebrating Ann Arbor’s decision to decriminalize entheogenic plants and fungi in the city. The university cited unlicensed vendors selling psilocybin products at past events. In response, the Student Association for Psychedelic Studies plans to sue, arguing the decision violates free speech and assembly rights. Organizers compare UM’s stance to its failed attempts to block the Hash Bash marijuana rally in the 1990s, when courts sided with students. A peaceful gathering on the Diag is still expected Sept. 21, alongside an afterparty at Rabbit Hole.