 In 2017, Hirshfield organized a Poets For Science component for the main D.C. March for Science held on Earth Day, April 22, on the Washington Mall.As a main rally speaker, she read "On the Fifth Day", a poem protesting the January 24, 2017, removal of scientific information from federal agency websites.The poem appeared on the front page of the "Washington Post's" Opinion Section a week before the March.