Tempers are running hot in science (as they are in the U.S. at large) as the field embarks on a long-overdue conversation about its treatment of women and people of color. In June, for example, thousands of researchers and academics across the globe—as well as the preeminent journals Science and Nature—stopped work for a day to protest racism in their ranks. The American Physical Society endorsed the effort to “shut down STEM,” declaring its commitment to “eradicating systemic racism and discrimination” in science.