How Stephen Jay Gould's career illustrates that criticizing science is important for American democracy.The question of public trust in science feels newly urgent, but today is not the first time that opposing ends of the American political spectrum have critiqued modern science. This dynamic has historical roots in the early 1970s, when critiques of science emerged simultaneously out of Civil Rights, feminist, and decolonization movements on the left, as well as within the creationism of the Christian Right. In Criticizing Science, Myrna Perez follows the public career of evolutionary biologist, political leftist, and anti-creationist Stephen Jay Gould during the final decades of the American twentieth century.