Who performed at the Benefit concert on June 11 1982 in Central Park?

Answer 1

I believe that you might have meant June 12th and not June 11th.

• Nuclear Disarmament Rally (1982)

June 12, 1982 - In NYC, 750,000 people marched from the UN to Central Park to protest nuclear weapons - in what was probably the largest single protest in U.S. history. New York City was shut down for the day. The concert featured Jackson Browne, Linda Ronstadt, Bruce Springsteen, etc. Keith Haring created a poster for the event which was handed out free to the audience and John Fekner stencils were on the site.