(Photo by Alessandro Bremec/NurPhoto via Getty Images.)Jewish Americans have historically been among the most principled defenders of free speech. When a group of neo-Nazis planned to march through the town of Skokie, Illinois, home to many Holocaust survivors, it was a Jewish attorney who stood up for their right of assembly. David Goldberger, then the legal director of the ACLU of Illinois, was no self-hating Jew, and he certainly harbored no …