An Open Air Rock Festival was held at Parade Stadium on July 19, 1970, attended by 6,000 people.  150 cops made 20 arrests for gate crashing but left dope smokers alone.  Organizer Pat Rains, owner of the Prison, hired 10 Olympic karate experts to keep people off the stage.  For his trouble he lost $35,000.  Despite a cold, foggy day, the participants enjoyed performances by:

• White Lightning
• Sly and the Family Stone (who supposedly called Minneapolis “worthless”)  Sly went on late, starting with the words “Minneapolis stinks” and played too long, leaving no time for the planned performance of Bloomsberry People.
• Illinois Speed Press (subbing for the Amboy Dukes)
• Richie Havens
• Johnny Winter