In my experience, scientists generally like to stay out of politics as much as possible. So I was a bit surprised to learn that a group of several hundred scientists and concerned citizens are planning to march on Parliament Hill. Dressed either in lab coats or in black clothing, the group will stage a mock funeral mourning the “death of evidence.” It’s the most visible sign yet of a growing discontent toward the Conservative government’s policies vis-à-vis science and evidence-based decision making.