Alternative Facts Are Imaginary
Marching in the rain, this protester is wearing a Brain Hat. These knit "thinking caps" represented critical thinking, a cornerstone of science. The sign references the fact that the square root of 1 is what mathematicians call an "imaginary number."
Seen at the 2017 March for Science/Earth Day event in Washington, DC. Activities included teach-ins on scientific and environmental topics, speakers, music, and a march to the U.S. Capitol.