Robert J. Zimmer, Who Promoted Free Speech on Campus, Dies at 75

A mathematician, he was for many years the president of the University of Chicago, where he argued that civility was not a reason to silence discussion.

Margot Stern Strom, Anti-Bigotry Educator, Dies at 81

She started an organization whose curriculums challenge teenagers to understand the roots of the Holocaust, racism, apartheid and other human injustices.