It was a call he didn't expect, let alone want, back on April 27, 1977. At the time, David Goldberger was a lawyer for the Illinois chapter of the American Civil Liberties Union (ACLU) and was developing broad expertise in the rights of people to engage in protests on private property. He had helped the Communist Party fight McCarthy-era statutes to get on the ballot in Illinois and anti-Vietnam-War activists to fight the never-ending legal roadblocks the city of Chicago deployed to stop protesters from assembling in the city's public spaces. In short, he was a rising First Amendment star...