On March 22nd 1968 far-left groups and some prominent poets and musicians along with 150 students invaded an administration building at Nanterre University and held a meeting dealing with class discrimination and the bureaucracy that controlled the school's funding. The police were called. In response to the growing unrest Prime Minister Georges Pompidou released the prisoners and reopenned Sorbonne. However, the protests and the strikes still grew more enraged. The students occupied Sorbonne, declaring it an autonomous "people's university". 401 popular action committees were set up in Paris.