As one member of the march recalled : In spite of the brutality of the police the spirits of the demonstrators were not dampened . Many were exhilarated by what had transpired and some felt it was an event that would mark a turning point . " It made me see we could build a movement by knocking off American symbols , " said Rubin . He added : Rubin later played an instrumental role in the anti-war demonstration that accompanied the 1968 Democratic National Convention in Chicago by helping to organize the Yippie " Festival of Life " in Lincoln Park . He spoke along with Hoffman at an anti-war rally at the Grant Park bandshell on August 28 , 1968 and instructed demonstrators to resist if a riot broke out . However , the extent of violence between Chicago police and demonstrators ( which an official government report called a " police riot " ) was not anticipated by the Yippie leaders . Some 1,500 people including civilians and police were injured . The arrest and trial of the Yippie leaders ( known later as the Chicago Conspiracy Trial ) which began on September 24 , 1969 eventually led to the conviction of Rubin and seven others on charges of incitement to riot , including Abbie Hoffman , Rennie Davis , John Froines , David Dellinger , Lee Weiner , Tom Hayden , and Bobby Seale
1968 Democratic National Convention
1968 Democratic National Convention
Jerry Rubin