The presidents of a wide-ranging group of 13 universities are elevating free speech on their campuses this academic year, as part of a new nonprofit initiative announced Tuesday to combat what organizers call dire threats to U.S. democracy. The Campus Call for Free Expression will take different forms on different campuses. The campaign, created by The Institute for Citizens & Scholars with funding from the Knight Foundation is designed to cultivate the freedom of expression on campuses and help students work together to find solutions to complicated, divisive problems.